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so... math huh?
Germany MyMic 
so... i saw this post on 9gag - 9gag.com/gag/4840184 and i start calculating quick like i studied in school and the result was 288 and after i clicked to see the comments and what other ppl are saying about his little ,,tricky'' math thing and i was amazed, simply amazed...
2012-07-24 16:44
it's 2 lol
2012-07-24 16:47
#2
Portugal wenke 
yes its two :D
2012-07-24 16:49
#602.
2012-07-25 23:28
2012-07-26 06:11
:DDDDDDDDDDDD no
2014-04-28 08:52
^WRONG
2014-04-28 19:06
+90000
2012-07-24 19:17
Haha, it's one of those trick questions. xD You will get 2 answers, depending on which rule you follow.
2012-07-24 23:42
There's no trick question at all and there's only one rule, that you DON'T multiply 2 with (9 + 3). If you do, that means 48 / 2 (9 + 3) "/" as in "per". So, it will be like 48 * 1/2 * 1 /(9 + 3) But, 48 * 1/2 * 1/(9 + 3) =/= 48 : 2 (9 + 3). The correct answer is 288. = 48 : 2 (9 + 3) 2 (9 + 3) is the same with 2 * (9 + 3). Proof: 2 * 9 + 2 * 3 = 2 * 24. And there's no such rule as "taking out factor from brackets as a priority" as in #503, unless if it's 48 + 2 * (9 + 3) or 48 - 2 * (9 + 3), you do the 2 * (9 + 3) first, because it's a multiplication while the other one, 48 + 2 (9 + 3) or 48 - 2 (9 + 3) is an addition or substraction. So, = 48 : 2 * (9 + 3) = 48 * 1/2 * (9 + 3) = 48 * 1/2 * 12 = 24 * 12 = 288 576 replies so far have proven the level of idiocy of HLTV.org users, even the "bad boys" are retards.
2012-07-25 23:23
Typo: 2 (9 + 3) is the same with 2 * (9 + 3). Proof: 2 * 9 + 2 * 3 = 2 * 12.
2012-07-26 00:04
Do you even BIDMAS bro? Edit: wrong person
2014-04-28 01:49
you are the only idiot here. Distributive property of multiplication over addition. Early Algebra problem. The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up. 2(9+3) follows the distributive property which can be rewritten as (2*9+2*3). Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it. You do NOT compute this expression from left to right until you use Algebra to simplify the statement 2(9+3). So this can be rewritten as: 48 / (2*9 + 2*3) Which leaves us with 48 / 24 = 2 Answer = 2. Lastly for those using Google or any other online calculator. These do not understand many theorems or properties so you must explicitly explain what you mean. There is a difference between 48 / 2 * (9+3) and 48 / 2(9+3). The first notation reads 48 / 2 * 1(9+3) while the second reads 48 / (2*9+2*3). Be very careful with your signs. TL;DR It is a fucking fraction. 48 in the upper part of it and 2(9+3) on the lower part of the fraction. As it is written, that's how it is calculated.
2014-04-28 04:08
thanks dude. That's what i was thinking
2014-04-28 04:43
Dude u got it wrong
2014-04-28 06:35
i.imgur.com/4zR3xTF.jpg There's no right solution. You're only implying that the parenthesis is placed like this: 48/(2(9+3)) but there's no parenthesis: 48/2(9+3) It ain't 288 either because there's no parenthesis like this: (48/2)(9+3) It's "unsolvable". This should be clear to everyone with a bit of math knowledge. Yes, they might both be "theoretical" solutions to the equation, but it's a matter of how you perceive the missing parenthesis for yourself.
2014-04-28 07:30
#756
k0nfig | 
Netherlands miles- 
2(9+3) is the same as 2 * (9 + 3) is the same as 2*12 = 24
2014-04-28 11:40
What are you even saying? I know that...?
2014-04-28 11:43
That would only be in the case of PEMDAS: 48/(2(9+3)) But, as I stated in the post you're replying to, there's more than one solution.
2014-04-28 12:26
#776
k0nfig | 
Netherlands miles- 
yeah you are right. I was too quick with my response.
2014-04-28 14:24
The thing is - you can understand what is written in the given picture both ways. So in general - both answers are correct since the question was not written clearly. That's why usually you write things down like in 2nd example in picture you made (show division with ________). 48/2(9+3) should be written as 48(9+3)/2 (if you mean to write down 1st example in your picture) so you don't confuse whoever you are asking how much 48/2(9+3) is.
2014-04-28 19:11
tbh after a bigger analysis on this I got to the conclusion that both are plausible cuz all this discussion is because of the way people read the fraction. It can be read like this (49/2)(9+3) which is equal to 288 or it can be read like this 49/(2(9+3)) which is 2. Although in my opinion, and the majority of the people on 9gag think that 2 is the correct answer which leads me to believe even more this is the right answer, but both are plausible
2014-04-28 21:42
Both are plausible because both are possible.
2014-04-28 21:50
basically ^^
2014-04-29 16:01
#737
 | 
Slovakia sanjuro 
finally somebody that knows what he is talking about
2014-04-28 09:59
2(9+3) is equal to 2 * (9+3) All that matters is that they're both included in the denominator.
2014-04-28 11:43
Haha wow you are retarded.
2014-04-28 18:35
I feel stupid now
2014-05-01 21:39
wrong reply
2014-04-28 07:18
no retard :D
2014-04-28 08:53
#736
 | 
Slovakia sanjuro 
go back to school idiot
2014-04-28 09:57
#738
 | 
Slovakia sanjuro 
my apologizes to you, i looked at that expression one more time and u are 100% right u dont need to go back to school :D
2014-04-28 10:26
.
2014-04-28 12:17
my eyes are bleeding!
2014-04-28 13:07
Edit: it depends on the way you understand, in this case because of stuff like this, we got stuff like {} and [ ] Conclusion: bad expression
2014-05-01 21:09
#403
2012-07-25 11:08
You are wrong, hahaha. I love these guys, that reads functions as they wants. What you mean is "48 / [2(9+3)]" not 48 / 2(9+3) ... so: 48/2*12 24*12 288 dl.dropbox.com/u/6089904/math.png
2012-07-25 14:21
288 = 100% not 2 dumbass..
2012-07-25 15:28
2 : educated ppl 288 : studpid illetrate 5 th grade kids..probably failed in maths
2012-07-25 16:43
+1
2012-07-25 16:56
48/2(9+3) = 2 48/2*(9+3) = 288 --- donot add * on your own..u fools
2012-07-25 16:57
treat 9 and 3 as variables not as numbers that u can add. then u will have: 48/2(9+3)=48/(2*9+3*2)=48/(18+6)=48/24=2 This process is called taking out the common factor from the bracket(sorry for me en, this is word to word translation from pl to en). That is why it should go like this, not like many ppl claim with division over multiplication (this is also valid but no in this case).
2012-07-25 17:07
hahahahahaha u wrong.. 48/2(9+3) = 48 / 2 * 12 = 288. 48/(2*9+3*2) = 48 / 24 = 2!! 48/2(9+3)>48/(2*9+3*2)=48/(18+6)=48/24=2
2012-07-25 18:16
#643
 | 
Latvia GekonsCS 
wolframalpha.com/input/?i=48%2F2%289%2B3.. END OF STORY! P.S. 48/(2(9+3)) =/= 48/2(9+3) KNOW THE DIFERENCE !
2012-07-26 11:39
you are messing up the order of operations. it goes 1) INSIDE brackets 2) multiplication and division are equal 3) addition and subtraction are equal so: 1) do brackets (9+3): 48/2(9+3)=48/2*12 2) all we have is division and multiplication left from step 1, so do it in order: 48/2*12=24*12=288 the wikipedia page on order of operations is very good if you are confused about this. en.wikipedia.org/wiki/Order_of_operation..
2012-07-25 23:33
48 / 2 * 12 = 288 48 * 2 / 12 = 8 4*4/16=1 4/4*16=16 x / y * z^2 >>> x * y / z^2
2012-07-25 17:45
i.imgur.com/CfPHQ.jpg too many stupid ppl.....cant rely argue with all
2012-07-25 18:29
you cant skip signs in those calculators.calculate both the ways in here web2.0calc.com/
2012-07-25 18:43
Throw a calculator into trash(( kalkulyatoronline.ru/
2012-07-25 18:50
LOL u don't need to add * it's obvious LMAO
2014-04-28 18:40
You wrote the same thing two different ways and got different answers... gg
2014-05-01 22:09
95% of the people were completely stupid Some of my favorite quotes: "that 2 percent of people think; 3 percent of people think that they are thinking and 95 percent of people would rather die than think" Bernard Shaw
2012-07-25 19:16
You have google in your browser and you are making a dumb of yourself anyway, muhehe
2012-07-25 20:21
#602. You call yourself educated? Get a grip, because you'll probably fail in life.
2012-07-25 23:30
Basically all it comes down to is whether the (9+3) is included in the denominator with the 2, and because there is no multiplication sign between them, it must be. If the 48/2 was in parenthesis, you'd be right. But they aren't. The thing that's confusing about this, is that it's not in fraction form. Fractions can be looked at as one entity, while the division sign can't. So it's not possible to say 48/2 (9 + 3)= 48/2 * (9+3) because there's no signification that it's a fraction or one entity. By default you have to assume it isn't. 48÷2(9+3)!= (48/2)(9+3). Unless there are parenthesis between the 48÷2, you can't possibly assume it as one entity.
2014-04-28 13:29
+1
2014-04-28 04:41
#583
 | 
Venezuela Riikards 
as simple as this
2012-07-25 22:56
#3
Germany pa$co 
2
2012-07-24 16:50
jeez it's so obvious that it is 2!
2012-07-24 16:52
48 / 24 = 2
2012-07-24 16:53
#6
Germany MyMic 
48:2(9+3) = x division goes first 48/2 = 24 then you do the calculation in parentheses and that leads us at 12. then 24 * 12 = 288.
2012-07-24 16:54
troll?
2012-07-24 16:57
no. this you learn in the first few years of school and you should know this : FIRST you do the MULTIPLYING and DIVISION
2012-07-24 17:02
It's preferred to start with the insides of the brackets, even if it contain addition/substraction.
2012-07-24 17:11
+90000
2012-07-24 19:17
+1
2012-07-25 00:31
+1
2012-07-25 15:55
true you start with the insides of the brackets. still 288 is the correct answer.
2012-07-25 16:35
if u asume there is an "*" between "2" and "("
2012-07-25 16:52
u consider the following: 2(x) = 2 * x the numerator and denominator are brackets themselves as a whole
2012-07-25 17:47
know something called as 'BODMAS' dont really know if it is taught in every country
2012-07-24 17:47
pemdas in english if i get your meaning "please excluse my dear aunt sally" parentheses, exponents, multiply, divide, add, subtract
2012-07-24 18:21
BODMAS = Bracket Operations Division Multiplication Addition Subtraction as i said depends on the way you are taught in your country but the correct answer is 288
2012-07-24 18:27
I would say 48/21 :)
2012-07-24 18:38
are u trying to say the answer is 48 or 21 or u r saying its 48 divided by 21=2.285? either ways both are wrong
2012-07-24 18:42
48 divided by 21. Isn't it something that x has a higher ( Something) than / ? So I would use the unknown x outside the barckets first:P
2012-07-24 19:03
thanks was wondering what the O in that stood for
2012-07-24 18:43
#8
Lithuania hx1 
Counting numbers after the bracket goes first mate. Then 2*12 and the last one 48:24 = 2. Easy.
2012-07-24 16:58
48:2(9+3) => 48:2*12 = 24*12 = 288 ... 4th grade my friend. Have you ever passed it?
2012-07-24 21:42
#218
Lithuania hx1 
Lmao how's counting numbers inside the brackets are the last of this. You dumb idiot have you ever passed the 4th grade urself? Numbers inside the brackets are the first then 2*12 and the 48:24. Go home and troll somebody else dipshit.
2012-07-24 22:10
And i didn't count numbers inside the brackets firts? You are really retarded. No wonder you are so bad at maths.
2012-07-24 23:39
#299
Lithuania hx1 
2*12 you dumbass because multiplication goes before division. Stop trying you're retarded anyway.
2012-07-24 23:50
Division and multiplication are the same grade, so they go in order from left to right. And first you said about the brackets and after I proven that you were wrong you say about mult/div order? You must be the most stupid kid that ever existed. math.about.com/library/weekly/aa040502a...
2012-07-25 00:02
No more stupid arguments you have? Are you to embarassed to reply?
2012-07-25 00:12
#386
Lithuania hx1 
I was sleeping you dumbfuck.
2012-07-25 08:53
Sureeee... that's why you wre online half an hour after i posted ... anyway, do you have any arguments to prove your maths knowledge?
2012-07-25 12:13
#418
Lithuania hx1 
Lol you must be retarded. The moment you started stating your bullshit it was 1 o'clock after the midnight so stfu. And cause I never log off so I'd never have to log back it doesn't mean I'm sitting all day long and nolifing plus proving senseless things to others and trolling here like you do. On topic: It's still 2. I don't give a fuck about your statements.
2012-07-25 12:26
When i posted #414 you were offline. You must be retarded since you do something and you say other. And i gave you the site on which you see the order of operations. And you still keep it your way. Go to your maths teacher. His answer will be 2, but not for the ecuation but for your mark. You don't have any argument to prove you are right, you know you are wrong, but you are to arogant to admit it.
2012-07-25 14:06
#445
Lithuania hx1 
My math teacher is a hard baller same as all math teachers in my school. They would tell me the right answer and if it was the one you say then it's cool by me. So stfu and stop arguing I don't care anyway.
2012-07-25 14:16
lol u got owned
2012-07-25 19:21
#567
Lithuania hx1 
So? Wow another fucking internet nerd. Go outside it's sunny. Proving something on the internet equals to shit so stfu.
2012-07-25 20:06
no it equals u are a moron lol, u thought u were right and u insulted someone else who was actually correct. BTW i was just outside for a few hours, and now im going to work where i will be around about 50 socially mature individuals. Have fun on the internet paleface. also ur username is the name of a porn website....u must jerkoff alot, hard for u to get girls much?
2012-07-25 21:45
#575
Lithuania hx1 
oh u dont have what to wank. well 2b4u fuck off now EDIT: #563 :DDDDDDDDDDD omg u r a fucking retard. he says that fagget was telling me the correct answer while I was saying it's 2 and now you said that he was correct while you posted an answer of 2 :DDD PLUS both answers are correct so why would he try to prove anything to me while both me and he are correct. wow smartass
2012-07-25 22:30
'multiplication goes before division' Where the hell did you learn that?
2012-07-25 01:51
#419
Lithuania hx1 
Dar pasakyk kad ne :) Daugyba eina pries dalyba, o dalyba po daugybos.
2012-07-25 12:26
mathsisfun.com/operation-order-pemdas.ht.. Divide and Multiply rank equally (and go left to right).
2012-07-25 12:50
#435
Lithuania hx1 
Why would I care about this since the answer is 2 anyway.
2012-07-25 13:29
Strong argument, Sir. You should care, because you're not completely right. The way it is typed might make you think that it's:   48 ------ 2(3+9) which would actually be 2, but it's not. The way it's typed now can also be written like this:   48 * (1/2) * (3+9) { a/(b(c))=a/(bc) a/b(c)=a*(1/b)*(c) }
2012-07-25 13:49
#446
Lithuania hx1 
LOL I do "care" what's the correct answer of some random equation found on the Internet. Wow I really care. Plus if there's nothing before brackets then it's multiplication. That's how I was taught. 288 and 2 are both correct so there's nothing to argue about, pal.
2012-07-25 14:19
Seems like you do care. You wouldn't call others names and argue about it in the first place if you wouldn't ;) You're right about the invisible multiplication sign before parentheses, but that doesn't change the order of the calculations in any way.
2012-07-25 14:40
#463
Lithuania hx1 
I call that idiot names cause he's annoying me as this was some important bullshit. And it's "parenthesis" not "eses". Why do people keep making this mistake.
2012-07-25 14:46
Parentheses is a plural form of parenthesis. We're going way offtopic though :)
2012-07-25 14:59
#467
Lithuania hx1 
ALKONAS doesn't show plural form.
2012-07-25 15:04
u r stupid and hes right ..u dumb fuck...go try it in scienttific calculator
2012-07-25 16:35
ever heard of the word BODMAS ?
2012-07-24 17:12
with BODMAS its 288 48/2*(9+3) 48/2*12 =288
2012-07-24 18:07
Watch the equation one more time. 48/2(9+3) != 48/2*(9+3). Learn parenthsis, don't add signs by yourself.
2012-07-24 21:18
It's the same shit lol :d If you put * or you don't doesn't matter
2012-07-24 21:41
It does. That's why so many people are getting confused. Get a scientific calculator and ch k result of both equations. prntscr.com/cman4 i.imgur.com/E1nQY.jpg See the difference
2012-07-25 07:26
u r stupid ....u dumb...its not 4 th grade
2012-07-25 16:37
wow
2012-07-25 05:59
web2.0calc.com/ go and check there or ask your maths teacher coz the way you are taught in india the answer is 288
2012-07-25 07:12
Did you even reat my post? Get a scientific calculator and see resul. By adding * , you'll get 288 and by just () you'll get 2. prntscr.com/cman4 i.imgur.com/E1nQY.jpg See the difference
2012-07-25 07:27
btw why did u make the equation (48/2)*(9+3) u shld have shown it as 48/2*(9+3) try both ur equations 48/2(9+3) and 48/2*(9+3) here web2.0calc.com/ and i guess the majority here say its 288
2012-07-25 18:24
nice catch
2012-07-25 16:45
:DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD go back to school
2012-07-24 17:36
No you're wrong ! 48:2(9+3)=2 it's easy
2012-07-24 17:49
fail
2012-07-24 20:23
AHAHAHAHHAHAHAHAHAHAHAHAHAHAHAHAHHAHA
2012-07-24 21:27
You and I might be the only smart ones over here :o
2012-07-24 21:47
.
2012-07-24 23:12
wat? Basic math is hard I know brah.
2012-07-24 23:43
doppelpost
2012-07-24 17:03
facepalm
2012-07-24 17:00
i really dont get this
2012-07-24 17:03
48:2(9+3) 48:2*9+3 24*9+3 219+3 223 learn2math
2012-07-24 17:03
#20
 | 
Finland FRGVN 
facepalm..
2012-07-24 17:12
LOL NOOB
2012-07-24 17:15
wtf?
2012-07-24 17:16
weak trolling
2012-07-24 17:32
abhahahah
2012-07-24 17:34
a(b+c) ab+c?
2012-07-24 18:09
ab + ac
2012-07-24 21:59
i know, but the one replied to thinks 2(9+3) = 2*9+3 = 21 so i showed him that way
2012-07-25 07:14
ac/dc
2012-07-25 19:43
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2012-07-25 21:05
ohh! u can use ctrl+c ctrl+v, clever boy!
2012-07-25 23:02
u think everyone else here has made it themselves?
2012-07-26 06:47
hhahaha
2012-07-24 18:25
hahahahaha
2012-07-24 19:08
brilliant dude
2012-07-24 19:46
. . . . . .. . . . . . . . . . . ,.-‘”. . . . . . . . . .``~., . . . . . . . .. . . . . .,.-”. . . . . . . . . . . . . . . . . .“-., . . . . .. . . . . . ..,/. . . . . . . . . . . . . . . . . . . . . . . ”:, . . . . . . . .. .,?. . . . . . . . . . . . . . . . . . . . . . . . . . .\, . . . . . . . . . /. . . . . . . . . . . . . . . . . . . . . . . . . . . . ,} . . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . . ,:`^`.} . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . ,:”. . . ./ . . . . . . .?. . . __. . . . . . . . . . . . . . . . . . . . :`. . . ./ . . . . . . . /__.(. . .“~-,_. . . . . . . . . . . . . . ,:`. . . .. ./ . . . . . . /(_. . ”~,_. . . ..“~,_. . . . . . . . . .,:`. . . . _/ . . . .. .{.._$;_. . .”=,_. . . .“-,_. . . ,.-~-,}, .~”; /. .. .} . . .. . .((. . .*~_. . . .”=-._. . .“;,,./`. . /” . . . ./. .. ../ . . . .. . .\`~,. . ..“~.,. . . . . . . . . ..`. . .}. . . . . . ../ . . . . . .(. ..`=-,,. . . .`. . . . . . . . . . . ..(. . . ;_,,-” . . . . . ../.`~,. . ..`-.. . . . . . . . . . . . . . ..\. . /\ . . . . . . \`~.*-,. . . . . . . . . . . . . . . . . ..|,./.....\,__ ,,_. . . . . }.>-._\. . . . . . . . . . . . . . . . . .|. . . . . . ..`=~-, . .. `=~-,_\_. . . `\,. . . . . . . . . . . . . . . . .\ . . . . . . . . . .`=~-,,.\,. . . . . . . . . . . . . . . .\ . . . . . . . . . . . . . . . . `:,, . . . . . . . . . . . . . `\. . . . . . ..__ . . . . . . . . . . . . . . . . . . .`=-,. . . . . . . . . .,%`>--==`` . . . . . . . . . . . . . . . . . . . . _\. . . . . ._,-%. . . ..`
2012-07-24 19:55
facepalm for you, if you don't see, he's trolling
2012-07-25 19:44
:facepalm
2012-07-24 21:49
idiot? At first you add 9 to 3. Then you multiply 2x12 and finally 48:24 and it's 2.. Really so hard basic maths rules..?
2012-07-24 21:58
good math!
2012-07-25 02:39
hahaahahah
2012-07-25 13:23
You can't even do 219+3 correctly, please...
2012-07-25 13:24
#587
 | 
Venezuela Riikards 
made my day
2012-07-25 23:00
lol
2014-04-28 13:02
lol
2014-04-28 14:43
Amazed, simply amazed...
2012-07-24 17:03
Alllright. I understand the probleme here. the answer is 2 if you read : 48 / (2*(3+9)) the answer is 288 if you read : (48/2)*(3+9) So which one should we choose? What's the rule in this case? I think its the second case : 48 / 2 (3+9) means 48 * (1/2) * (12) = 288 I'm 99% sure about this, but i may be wrong. (FYI, i'm a phd student in math and obviously don't think this matters at all...)
2012-07-24 17:10
Unless this is a master troll, the first (2) is correct. "The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up. 2(9+3) follows the distributive property which can be rewritten as (2*9+2*3). Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it. You do NOT compute this expression from left to right until you use Algebra to simplify the statement 2(9+3)."
2012-07-24 17:12
not trollin here. I understand your point, it's just that what you say is correct if we write : 48 / (2*(3+9)) (the parenthesis are important) here it's written : 48/2(3+9) which i believe to mean 48 * (1/2) * (3+9) sorry :x
2012-07-24 17:22
What my post is saying that a/b(c) = a/(bc), since b(c) cannot be separated. but again, my source might be a troll (i wasn't calling you one)
2012-07-24 17:31
and what my post is saying : a/(b(c))=a/(bc) but a/b(c)=a*(1/b)*(c)
2012-07-24 17:32
i dont know what to believe anymore but unless i am being trolled by a soon-to-be math teacher, : and / are not the same. : means no brackets, / means brackets. Ie in this particular case it would be 288. go figure.
2012-07-24 17:42
"The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up" Bullshit at its best. "2(9+3) follows the distributive property which can be rewritten as (2*9+2*3)." Right. But not relevant here. "Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it." Wrong. The distributive property does NOT say a term like x(y+z) has to be treated like (x(y+z)). That's completely bullshit. "You do NOT compute this expression from left to right .." Algebraic terms never have a "direction". It's all about algebraic relations. see #32
2012-07-24 17:50
#166
2012-07-24 21:14
HAHAHAAH
2012-07-24 18:26
sorry but you're wrong. every operation you perform is the use of algebra, not just the application of the distributive property to 2(9+3). you're selecting that out of a whole algebraic statement. the distrbutive property is algebraic manipulation. 48/2 is algebraic manipulation. 9+3 is algebraic manipulation. grouping by parentheses is algebraic manipulation. there is nothing special about 2(9+3) that requires it to go first.
2012-07-24 19:55
+1 Unless it's a 48 + 2 (9 + 3). If it is, doing 2 (9 + 3) first is a must.
2012-07-25 23:48
"The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up." Wrong. Let's talk in #602.
2012-07-25 23:37
not so the answer is obviously 2 48/2(9+2) means: 48 ----------- 2(3+9)
2012-07-24 17:15
see #34
2012-07-24 17:22
Fail
2012-07-24 17:16
Hello Swiss mate. Let me explain you why the second one is the right one: Unlike addition and multiplication "operations" like subtraction and division aren't "normal" binary operations. They are just conventions to make the term "operating with the invers" shorter. So -x means nothing else than +(-x) and /x is just *(1/x). See: en.wikipedia.org/wiki/Operation_(mathema.. en.wikipedia.org/wiki/Binary_operation en.wikipedia.org/wiki/Group_(mathematics.. en.wikipedia.org/wiki/Ring_mathematics en.wikipedia.org/wiki/Field_(mathematics.. As long as there aren't any braces 48/2*(3+9) means nothing else than 48*(1/2)*(3+9). Jesus...all those kids on 9gag. The answer has absolutely nothing to do with "braces come first". There isn't even such a rule (you just aren't allowed to operate with things from outside and inside the braces unless you follow a specific rule like the distributivity law). Also there is no law which says you have to calculate from left to right...these kids today..
2012-07-24 17:27
ty! ahah whenever i read someone sayin something wrong i think of this face : themavesite.com/TMS-Pictures/Epic/Memes/.. and they probably think i'm like this as well xD
2012-07-24 17:26
:D But it's funny to see how people are arguing with their "rules we learned at school". When you first meet commutative algebra at university (need to study mathematics or physics) it completely blows your mind. First you're like "wtf, why we have to learn that stuff. no need for it". But then you realize that this abstract shit is exactly what gives all those "rules from school" a serious foundation and when you see how this stuff allows you to go WAY more in depth algebra starts to get very interesting.
2012-07-24 17:39
Hello German mate. It's brackets or parentheses. Braces: stunningsmile.files.wordpress.com/2012/0..
2012-07-24 17:38
Thanks bra Now the sentence "braces come first" sounds a bit like a statement from pedobear :D
2012-07-24 17:43
"i'm a phd student in math" People lie a lot on internet :/
2012-07-24 18:09
dsl mec, je mytho pas. Je fais une these en math théorique : théorie géométrique des groupes à l'EPFL en suisse. Translation : Sorry bro, not lying. I'm a phd student in Lausanne switzerland. Studying geometric group theory. kthxbye
2012-07-24 18:54
Ouais je viens de taper à la calculette, tu as bien raison. You're right.
2012-07-24 23:06
phd in math. Lies.
2012-07-24 23:45
sorry bro : phd student in math!
2012-07-24 23:47
Since you're PhD in maths let me ask you something, would anyone even write a formula like that after primary school? Just asking because the division symbol isn't even used after primary school :D
2012-07-25 06:09
well this is computer text so i guess it's the only way. But it was obviously written this way to make a topic and troll people ˆˆ
2012-07-25 09:57
Yup, just like "6÷2(1+2)= ?" :P
2012-07-25 14:44
#18
 | 
Finland FRGVN 
what the fuck dudes? the answer totally is 288. Easy math since first you remove the brackets. 48:2(9+3) =48:2*12 then just from left to right.. 48:2*12 24*12 =288 ----------------------- 1. terms inside parentheses or brackets 2. exponents and roots 3. multiplication and division 4. addition and subtraction SOURCE: en.wikipedia.org/wiki/Order_of_operation.. ...End of discussion.
2012-07-24 17:11
2(9+3)is a single term .. by adding it bracket won't be removed you have to multiply it by 2 to remove it .. BODMAS
2012-07-24 17:14
#33
 | 
Finland FRGVN 
I've been to school last time like 4 years ago so no clue rly but thats how I rly think it goes :D so ur saying it goes like this?: 48:2(9+3) separated into two parts so easier to follow on text: 48: and 2(9+3) 2*9 & 2* 3 = 18 & 6 48:(18+6) 48:24.. = 2
2012-07-24 17:20
it goes like this 2(9+3) = 2(12) then you have to multiply 2 by 12 which will give you 24 then divide 48 by 24 which is 2 ..
2012-07-24 17:25
#48
 | 
Finland FRGVN 
yeah but i broke it down even more.. since thats the way you'd use it in a situation like 2(9x+3)
2012-07-24 17:31
if u r saying the answer is 2 then sorry bro you are wrong
2012-07-24 17:56
#93
 | 
Poland Marvelm 
2(9+3)is a single term HAHA, since when? 2(9+3) is the same as 2*(9+3), you can just skip the '*' sign before the parentheses. IT GOES LIKE THIS AND ONLY THIS: 48/2(9+3)=48/2*(9+3)=48/2*12=24*12=288 THERE IS NO OTHER POSSIBLE ANSWER, if it looked like that: 48/(2(9+3)) it would mean the answer 2, but since there is no parentheses before 2, you just do the parentheses first and then go from left to right.
2012-07-24 18:07
ROfl
2012-07-24 19:26
No. 2(9+3) has higher priority than 48/2. 2(9+3) cannot be broken up. Source: wolframalpha.com/input/?i=48%3A2%289%2B3.. #21
2012-07-24 17:18
1. terms inside parentheses or brackets
2012-07-24 17:20
2(9+3) cannot be broken up --> it equals 24 but i'm not sure what to think anymore.
2012-07-24 17:24
48:2 goes 1st
2012-07-24 17:26
explain
2012-07-24 17:30
nevermind, he's probably right
2012-07-24 17:31
what yo explain? if you have 1+3+4 will you do first 3+4? it's same (multiplication and division have equal priority)
2012-07-24 17:32
it's same (multiplication and division have equal priority) LOL, don't tell me you haven't gone thru BODMAS rule ?
2012-07-24 17:34
In this case it doesn't matter which one goes first. But in the thread case you ALWAYS do brackets first.
2012-07-24 17:36
2(9+3) = (2*9 + 2*3)
2012-07-24 17:37
#52
Canada xb0y 
Do you even understand what herpderp said in his last post? 2(9+3) cannot be broken because of brackets. 48:2*(9+3) is not equals to 48:2(9+3).
2012-07-24 17:32
48:2*(9+3) is not equals to 48:2(9+3). ok now i got that author is just a troll
2012-07-24 17:41
no, those two are the same xboy is wrong in asserting one must multiply by 2 first. brackets first ONLY means doing the operation INSIDE brackets first. multiplying by 2 is OUTSIDE the brackets.
2012-07-24 20:00
This is where you guys fail x(a+b) = xa+xb x here is associated with bracket and have have to be solved it first.
2012-07-24 21:26
that's not what doing brackets first means. brackets first means doing the operation INSIDE the brackets must be done first, not every operation around brackets are done first.
2012-07-24 19:58
plus 48/2*(9+3) is actually equal 48/2(9+3). The term doesn't change just because you're to lazy to write the "*" down. btw. the "brackets come first" isn't a rule, it's just an advice. You're free to calculate the bracket term whenever you want. You can even operate from outside the brackets with the inside term if you're respecting the distributive property (x*(y+z)=x*y+x*z) and/or the associative property (x*(y*z)=x*y*z resp. x+(y+z)=x+y+z).
2012-07-24 20:12
pretty much what i said in #132 the large issue here is kids are taught 'do it in this order' rather than how algebra actually works, aren't taught what algebraic properties actually mean in terms of manipulating equations, so when something comes up like this, they can't understand what's going on. turning algebra into routine is really unfair to math and unfair to kids. glad to see someone else understands it past pemdas or bodmas or whatever acronym you were taught :)
2012-07-24 20:19
I never learned any of those "rules". It's all about the basics of commutative algebra (most people will never hear of them since you have to study mathematics or physics). The only "rule" you really have to learn is the multiplication before addition. Actually that's also just a convention and not an axiom, but one that's somehow "necessary". Otherwise we would have to use much more brackets. Other "rules" like the "brackets first" aren't necessary at all. But after reading #154 I just realized how clever some of these "fake rules" are. I mean there's absolutely no need to calculate from left to right since algebraic terms don't have a "direction". But since people don't know what "/x" really means this rule helps to avoid the mistake of interpreting a term like x/y*z as x/(y*z) (it's not about setting a bracket - that's okay since the multiplication is associative - it's about inverting z).
2012-07-24 20:40
As you say, there is some necessity to some conventions. The problem is when new convention/routine are added to entirely replace understanding. Yes rules like #154 are clever and helpful, but consider he had to ask a teacher to make sure it was correct. Routines like that shouldn't be used to cover up what's going on. They should be something useful to be used after the foundations are understood. Shortcuts are nice until you run into trouble with them like has occurred in this whole 48/2(9+3) topic. That's why the foundations should be taught first. I'm in math so surely biased in that regard, but commutative algebra as you bring up should be taught right away to younger kids IMO. Finite groups are not hard to grasp. Start there and work up to integers, to reals, etc. To this day I don't know why I was taught trig (7th grade, around 11-12 years old) before group theory (2nd year of undergrad college, around 19-20 years old); I don't think I've ever used sine outside of a classroom, but everyone uses algebraic manipulations, and as we see here, it is not taught well enough. (By the way, a little aside, a friend of mine swears by reverse polish notation. It doesn't require brackets/parentheses at all. en.wikipedia.org/wiki/Reverse_Polish_not..)
2012-07-24 20:55
True true. If you start studying mathematics everything you learned before about mathematics gets irrelevant. For the first time you will build up a solid foundation. After college you know how to differentiate and integrate in R and how to handle certain mathematical problems, but you basically have no fucking idea what's really going on. Sometimes I'm thinking "why didn't we learn "true" mathematics right from the beginning at school?". The thing is: 99% of all people will never need to know how mathematics really works. It makes sense to teach them only what they may "use" at some time in their life. Even the engineers don't go the full way. They also use a lot of rules and theories without understanding their background. On can clearly see that when it comes to show some proofs. Sometimes they do it, but mostly they're only interested in "how can I use it?" without ever having understood "why" it is/works that way. But the biggest difference is: Engineers and most science students never leave R and C even though they use theorems which only can be proved if you understand abstract algebra and topology. Can't blame them cause they really have to rush true a lot of stuff. Best example is linear algebra. Every engineer and science student has to learn it but only the mathematics and (depending on the university) physics understand it fully.
2012-07-24 21:42
1. terms inside parentheses or brackets = (9+3) goes first. I don't get your point.
2012-07-24 17:32
son : is ratio in woflram alpha, not division. the fact you couldn't see that from the results shows everyone how much you understand math :) now look at wolfram alpha with the actual statement typed in: wolframalpha.com/input/?i=48%2F2%289%2B3..
2012-07-24 19:58
dad : and / are not the same thing. : is given in the question. a math teacher I asked said that the answer is 228 because the question has a : given, and in written form this means that the rest is not in parenthesis. edit: I was wrong in the post you replied to I guess, but : is what is used in the question and I think wolfram alpha might mess that up, not sure.
2012-07-24 20:06
aha the 'dad' made me laugh :D thanks, been a boring day and a good chuckle felt nice :D. sorry for being so grumpy, bad day wearing on me i guess to be honest i've never seen : used for anything besides as a ratio (grew up in north america). that's how wolfram alpha is using it also, being a north american company that would make sense. one of my profs did a lot of the graph theory in wolframalpha, so i'll mention to him other countries to do treat : the same way to see if maybe they want to clarify that on the site or rethink how it's used
2012-07-24 20:28
bitch please, i thought every finn can do that easy math task :D 48 : 2(9+3) first you multiply (9+3) with 2 which opens the parentheses. 48 : 18+6 48 : 24 = 2
2012-07-24 17:48
#100
 | 
Finland FRGVN 
bitch please read the thread before commenting.
2012-07-24 18:13
i readed? you did it wrong and now you are saying its 2
2012-07-24 18:39
brilliant
2012-07-24 19:56
48:2(9+3) if it's 48:2*(9+3) 48:2*(12) 24*12=288
2012-07-24 17:11
You have to double bracket first ;)
2012-07-24 17:28
no need. in russian school we did it this way
2012-07-24 17:31
meanwhile in russia :))
2012-07-24 17:31
#27
Canada xb0y 
2 Bye.
2012-07-24 17:16
48 : 2(9+3) = = 48 : (2*9+2*3) = = 2
2012-07-24 17:19
288.. 48 / 2 x 12 from left to right
2012-07-24 17:20
OH GOD WHY !! you are not writing ENGLISH , this is MATHS which have rules
2012-07-24 17:26
i wrote it because u dont know how to solve it.. you must do it from left to right.Answer is 288
2012-07-24 17:33
you have to solve bracket first, which can't be solved until you have multiplied 12by2 2(9+3) is a single term ..
2012-07-24 17:36
dont you have scientific calculator ... go for it ;)
2012-07-24 17:38
GOD !!
2012-07-24 17:41
2012-07-24 17:42
/fp
2012-07-25 04:44
NO it's not brackets first means you do what is INSIDE the brackets first. 2 is OUTSIDE the brackets. you would only be right if the statement had an extra pair of brackets, if it was 48/(2*(9+3))
2012-07-24 20:01
since 48÷2×(9+3) can also be written 48×1/2×(9+3) the question really is whether you consider 2×(9+3) as one term (which is the denominator) then 48×1/2×12 = 48×1/24 = 48/24 = 2 OR you consider 48×1/2×(9+3) = 48×1/2×12 = 48×12×1/2 = 576×1/2 = 288 altough I'm pretty sure the correct one is 2, the whole equation is messed up from the beginning since the division symbol is wrongly put there
2012-07-24 17:34
: means no brackets (288), / means brackets (2). I don't see how it is wrongly put. In this case the answer is 288 it seems.
2012-07-24 17:40
it should've had / and no confusion would've occured then, that's why I meant to say the whole equation is invalid because of the wrong division symbol used, that being said there's no real need to solve this
2012-07-24 17:58
The correct answer is 288 (every algebraic software will approve this). But only a total retard would write a term like 48/2*(9+3). To avoid misunderstandings a normal person would write (48/2)*(9+3) or 48*(1/2)*(9+3) or 48*(9/2+3/2) (of course you can also do the addition first, this isn't relevant). If you want the term which is equal 2, you have to write 48/(2*(9+3)).
2012-07-24 18:05
I dunno why I wrote #92. Guess I replied to the wrong comment. Just to make this clear: It doesn't matter what kind of division symbol you use. These are all just short-terms for the multiplication with the inverse: 1/x = x^(-1) 1:x = x^(-1) There's neither a rule nor a convention that says: "/ means brackets".
2012-07-24 22:25
in school (and confirmed by a soon-to-be teacher) we were taught that they had separate meanings (we have one of the best education systems in europe). But I'm not an expert so don't come at me.
2012-07-24 22:41
Most mathematical software use "/" and you always have to put brackets after it. Only if the divisor (aka denominator) is written lower than the dividend (aka numerator) you don't have to use brackets.
2012-07-24 22:48
there's nothing wrong with the division sign for 2(9+3) to all be in the denominator, it would have to have an extra set of brackets than it does. i.e., it would have to be 48/(2*(9+3)). hence your second way is the correct one
2012-07-24 20:03
2012-07-24 22:15
48/2(9+3) = 48/(2x9+2x3) = 48/24 = 2 edit: This is the answer ignorants.
2012-07-24 17:32
#45
 | 
Finland FRGVN 
well I'm now pretty sure the answer is 2, since like w1gga said on post #24 to me 2(9+3) is a single term and it is. u cannot take off the brackets unless you've multiplied the addition inside the brackets..
2012-07-24 17:29
#62
Canada xb0y 
Yes, he is right. 2(9+3) cannot be broken because of brackets. 48:2*(9+3) is not equals to 48:2(9+3). (*) 48:2*(9+3) => 48:2*(12) => 24*12 => 288 (*) 48:2(9+3) => 48:2(12) => 48:24 => 2 Edit: And those who are talking nonsense Parenthesis If you follow it properly you'll get 48/(2(9+3)).
2012-07-24 17:37
48/(2(9+3)) would be right if the question had a / in it. / and : are not the same. : means no brackets around 2(9+3) -> 288.
2012-07-24 17:39
According to my friend who studies math the notation is actually key here. : and / is not the same in notation. With : the answer is 288, with / the last part goes in brackets = 2.
2012-07-24 17:38
this topic :( how people can be so stupid ?
2012-07-24 17:34
#206
face | 
World knwn 
same thought mate :)
2012-07-24 21:54
It's 42.
2012-07-24 17:34
9Fag*
2012-07-24 17:34
totally
2012-07-24 18:08
48/2(9+3) 48/(18+6) 48/24 2 =)))
2012-07-24 17:36
CS IS AFFECTING EVERYONE'S BRAINS!
2012-07-24 17:38
#75
Canada xb0y 
Okay to sum all it up. Answer is 2. 2(9+3) cannot be broken because of brackets. 48:2*(9+3) is not equals to 48:2(9+3). (*) 48:2*(9+3) => 48:2*(12) => 24*12 => 288 (*) 48:2(9+3) => 48:2(12) => 48:24 => 2 And in equation if you follow proper parenthesis you'll get -> 48/(2(9+3)) which is also equals to 2.
2012-07-24 17:39
its -123123
2012-07-24 17:45
hhahaha
2012-07-24 19:52
laughing my ass off how ppl think they are so vice but in reality they just dont know shit about math or have just forgot it totally XDDDD
2012-07-24 17:51
#87
Canada xb0y 
2nd Method ‎48 ÷ 2(9+3) => 48÷(2x9 + 2x3) => 48÷(18+6) => 48÷(24) => 2
2012-07-24 17:54
yeah mum said the same, result is 2:) division is first but in this case first you do the brackets, which that means you multiplying 2 with 9 and 3. my bad :DDDD
2012-07-24 17:57
Math is not about "opinion" wether you think you should do one operation or the other first. Whatever is inside () should go first.
2012-07-24 17:59
#96
Argentina damb 
is 2...
2012-07-24 18:08
#98
 | 
Poland Marvelm 
IT GOES LIKE THIS AND ONLY THIS: 48/2(9+3)=48/2*(9+3)=48/2*12=24*12=288 THERE IS NO OTHER POSSIBLE ANSWER, if it looked like that: 48/(2(9+3)) it would mean the answer 2, but since there is no parentheses before 2, you just do the parentheses first and then go from left to right. REALLY PLEASE, EITHER LEARN MATH OR DON'T TRY TO COUNT AT ALL, CAUSE THE AMOUNT OF BULLSHIT IN THIS THREAD MAKES ME WANNA PUKE. You can say I'm wrong, cause You may be dumb, but I'm not.
2012-07-24 18:09
#87
2012-07-24 18:58
#118
 | 
Poland Marvelm 
Please stfu, you first multiply the parentheses by 2, which is wrong by itself.
2012-07-24 19:07
Lmfao, feel sorry for you sir. X/a(b+c) != x/a*(b+c) Please go to classes again.
2012-07-24 21:16
#190
 | 
Poland Marvelm 
EXACTLY. NOW APPLY WHAT YOU HAVE WRITTEN TO THIS EXAMPLE: 48/2(9+3)=48/2*(9+3)=48/2*12=24*12=288 ENOUGH SAID.
2012-07-24 21:42
#213
face | 
World knwn 
yep :D
2012-07-24 21:59
actually hes writing 48/2(9+3)=/=(is not equal to) 48/2*(9+3) which actually is
2012-07-25 07:19
#365
 | 
Poland Marvelm 
Ye, sorry, i misread it, he's wrong ofc, it's the same.
2012-07-25 07:21
#369
 | 
Poland Marvelm 
And I have a masters degree in applied mathematics from the university of technology and I can assure You that You're wrong. You just skip the '*' sign because it's permitted, that's all, it doesn't change the way you count it in any way.
2012-07-25 07:26
Feel sorry for you. prntscr.com/cman4 i.imgur.com/E1nQY.jpg See the difference
2012-07-25 07:28
#371
 | 
Poland Marvelm 
Calculators don't work this way, you can't skip the signs in them if You want to have the right answer, keep feeling sorry, I know I'm right.
2012-07-25 07:29
You know, you're in no way trying to prove me wrong. Post proof, facts, your maths lecture notes w/e to prove your answer else this debate will go on for ages. i.imgur.com/DKxJK.png , if you still don't understand then i must say you're just an ignorant teacher. Have a nice day sir.
2012-07-25 07:34
#380
 | 
Poland Marvelm 
Okay, why did you put the '2' in the denominator? Makes totally no sense. Wolfram maybe will get to you better since I can't. wolframalpha.com/input/?i=48%2F2%289%2B3..
2012-07-25 07:44
Because 2(9+3) is one term idiot. x/a(b+c) = x/(ab+ac)
2012-07-25 07:50
it would have been one term if it was (2(9+3)) but in this case its 48/2(9+3)
2012-07-25 18:36
2
2012-07-24 18:21
48 ÷ 2(9 + 3)= 48 ÷ (2x9+2x3) 48 ÷ 24= =2 My final grade in math was 6/10...
2012-07-24 18:46
2.. if you say anything else you're retarded or lack basic math knowledge (same same). order of calculation: parentheses multiplication and division addition (9+3) = 12 the order now doesn't matter. division first: (48/2) * (1/12) = 2 multiplication first: 48/(2*12) = 2
2012-07-24 18:54
you made x/y*z to x/(y*z) and that's wrong. x/y*z is x*(1/y)*z. Algebraic convention, see #32.
2012-07-24 19:08
you're right, my bad :p
2012-07-24 19:30
is 2
2012-07-24 19:02
at least we know you are called Ofir Barogel and suck at math :D trolled by 9gag
2012-07-24 19:07
division and multiplication are equal, so we should calculate from left to right and ofc calculations in parentheses have precedence. so 48 / 2 * (9 + 3)= 48 / 2 * (12) = 24 * (12) = 288 just check on good calculator,ask some teachers or even write simple program...
2012-07-24 19:06
#121
 | 
Poland Marvelm 
FINALLY SOMEONE WHO KNOWS WHAT HE'S TALKING ABOUT, THANK YOU.
2012-07-24 19:10
. . . . . .. . . . . . . . . . . ,.-‘”. . . . . . . . . .``~., . . . . . . . .. . . . . .,.-”. . . . . . . . . . . . . . . . . .“-., . . . . .. . . . . . ..,/. . . . . . . . . . . . . . . . . . . . . . . ”:, . . . . . . . .. .,?. . . . . . . . . . . . . . . . . . . . . . . . . . .\, . . . . . . . . . /. . . . . . . . . . . . . . . . . . . . . . . . . . . . ,} . . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . . ,:`^`.} . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . ,:”. . . ./ . . . . . . .?. . . __. . . . . . . . . . . . . . . . . . . . :`. . . ./ . . . . . . . /__.(. . .“~-,_. . . . . . . . . . . . . . ,:`. . . .. ./ . . . . . . /(_. . ”~,_. . . ..“~,_. . . . . . . . . .,:`. . . . _/ . . . .. .{.._$;_. . .”=,_. . . .“-,_. . . ,.-~-,}, .~”; /. .. .} . . .. . .((. . .*~_. . . .”=-._. . .“;,,./`. . /” . . . ./. .. ../ . . . .. . .\`~,. . ..“~.,. . . . . . . . . ..`. . .}. . . . . . ../ . . . . . .(. ..`=-,,. . . .`. . . . . . . . . . . ..(. . . ;_,,-” . . . . . ../.`~,. . ..`-.. . . . . . . . . . . . . . ..\. . /\ . . . . . . \`~.*-,. . . . . . . . . . . . . . . . . ..|,./.....\,__ ,,_. . . . . }.>-._\. . . . . . . . . . . . . . . . . .|. . . . . . ..`=~-, . .. `=~-,_\_. . . `\,. . . . . . . . . . . . . . . . .\ . . . . . . . . . .`=~-,,.\,. . . . . . . . . . . . . . . .\ . . . . . . . . . . . . . . . . `:,, . . . . . . . . . . . . . `\. . . . . . ..__ . . . . . . . . . . . . . . . . . . .`=-,. . . . . . . . . .,%`>--==`` . . . . . . . . . . . . . . . . . . . . _\. . . . . ._,-%. . . ..`
2012-07-24 19:35
. . . . . .. . . . . . . . . . . ,.-‘”. . . . . . . . . .``~., . . . . . . . .. . . . . .,.-”. . . . . . . . . . . . . . . . . .“-., . . . . .. . . . . . ..,/. . . . . . . . . . . . . . . . . . . . . . . ”:, . . . . . . . .. .,?. . . . . . . . . . . . . . . . . . . . . . . . . . .\, . . . . . . . . . /. . . . . . . . . . . . . . . . . . . . . . . . . . . . ,} . . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . . ,:`^`.} . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . ,:”. . . ./ . . . . . . .?. . . __. . . . . . . . . . . . . . . . . . . . :`. . . ./ . . . . . . . /__.(. . .“~-,_. . . . . . . . . . . . . . ,:`. . . .. ./ . . . . . . /(_. . ”~,_. . . ..“~,_. . . . . . . . . .,:`. . . . _/ . . . .. .{.._$;_. . .”=,_. . . .“-,_. . . ,.-~-,}, .~”; /. .. .} . . .. . .((. . .*~_. . . .”=-._. . .“;,,./`. . /” . . . ./. .. ../ . . . .. . .\`~,. . ..“~.,. . . . . . . . . ..`. . .}. . . . . . ../ . . . . . .(. ..`=-,,. . . .`. . . . . . . . . . . ..(. . . ;_,,-” . . . . . ../.`~,. . ..`-.. . . . . . . . . . . . . . ..\. . /\ . . . . . . \`~.*-,. . . . . . . . . . . . . . . . . ..|,./.....\,__ ,,_. . . . . }.>-._\. . . . . . . . . . . . . . . . . .|. . . . . . ..`=~-, . .. `=~-,_\_. . . `\,. . . . . . . . . . . . . . . . .\ . . . . . . . . . .`=~-,,.\,. . . . . . . . . . . . . . . .\ . . . . . . . . . . . . . . . . `:,, . . . . . . . . . . . . . `\. . . . . . ..__ . . . . . . . . . . . . . . . . . . .`=-,. . . . . . . . . .,%`>--==`` . . . . . . . . . . . . . . . . . . . . _\. . . . . ._,-%. . . ..`
2012-07-24 19:51
SO 48 / 2 * (9 + 3)= 48 / 2 * (12) = 48 / 24 = 2
2012-07-24 20:08
its wrong just read my post... why you multiply before division ? division is 1st - we calculate from left to right
2012-07-24 20:13
lol wtf srsly? i dunno if in polish schools u learn differently, but multiply and division arent EQUAL. first u have to do is multiply
2012-07-24 20:41
are equal bro just read mathgoodies.com/lessons/vol7/order_opera.. Example 3 and ?
2012-07-24 21:33
its not :( first is done multiplication bro wtf =)) answer is 2
2012-07-24 21:45
ok show me then where can i read about your rules, everywhere are only my...
2012-07-24 22:22
Division and multiplying have equal priorities,don't miss your school
2012-07-24 22:38
dont miss my school? rofl. its multiplying whatever u will say.
2012-07-24 22:46
So now we can add to your low math skillz your stubborness.I said a fact to you,you just can't accept
2012-07-24 22:47
i can accept it but its not right, why should i accept it? im saying multiplying, if its not correct then i might have messed up with it but since a lot of guys say it, it might be right.
2012-07-24 22:49
Division and multiplying are equal, lol.
2012-07-25 04:49
u didnt read my sentence, did you?
2012-07-25 08:39
give me proofs that multiplication & division aren't equal. We were taught that they're equal in school & in university. It's the same in the math books I have.
2014-04-28 04:30
I WON IT'S 2 MUTIPLY ITS AN ANSWER
2012-07-24 21:02
this do not explain why you're changing sides
2012-07-24 21:36
i changed sides ? where its simple math bro...wtf
2012-07-24 22:23
no... At first you add 9 to 3. Then you multiply 2x12 and finally 48:24 and it's 2.. Really so hard basic maths rules..?
2012-07-24 21:57
you kidding me right ? why you multiply before division ? read about this rules #182
2012-07-24 22:19
because there's a bracket.. you add 9 to 3 in a bracket, then multiply the result by 2 and then 48:24.. you're an idiot?
2012-07-24 22:33
what ? i dont multiply nothing by 2 ? DIVISION AND MULTIPLY ARE EQUAL SO AND WE MUST CALCULATING FROM LEFT TO RIGHT...so division is first in this example... i dont get it what you try to tell me ?
2012-07-24 22:44
At first you add 9 to 3 and then multiply. FIRST IS BRACKER, THEN MULTIPLYING AND DIVIDING -.-
2012-07-25 14:42
"THEN MULTIPLYING" plz go to school and teach about basic math rules bro mathgoodies.com/lessons/vol7/order_opera.. here you have 3 rules and read example 3 too
2012-07-25 15:45
nevermind, don't want to explain you cause you still won't get it. Result is 2
2012-07-25 16:44
you have similar example on link so...why you dont even read this ? and this example shows how we all should calculate this...and ofc result is 288
2012-07-25 17:18
yeah yeah, of course.. hahah
2012-07-25 19:00
. . . . . .. . . . . . . . . . . ,.-‘”. . . . . . . . . .``~., . . . . . . . .. . . . . .,.-”. . . . . . . . . . . . . . . . . .“-., . . . . .. . . . . . ..,/. . . . . . . . . . . . . . . . . . . . . . . ”:, . . . . . . . .. .,?. . . . . . . . . . . . . . . . . . . . . . . . . . .\, . . . . . . . . . /. . . . . . . . . . . . . . . . . . . . . . . . . . . . ,} . . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . . ,:`^`.} . . . . . . . ./. . . . . . . . . . . . . . . . . . . . . . . . . ,:”. . . ./ . . . . . . .?. . . __. . . . . . . . . . . . . . . . . . . . :`. . . ./ . . . . . . . /__.(. . .“~-,_. . . . . . . . . . . . . . ,:`. . . .. ./ . . . . . . /(_. . ”~,_. . . ..“~,_. . . . . . . . . .,:`. . . . _/ . . . .. .{.._$;_. . .”=,_. . . .“-,_. . . ,.-~-,}, .~”; /. .. .} . . .. . .((. . .*~_. . . .”=-._. . .“;,,./`. . /” . . . ./. .. ../ . . . .. . .\`~,. . ..“~.,. . . . . . . . . ..`. . .}. . . . . . ../ . . . . . .(. ..`=-,,. . . .`. . . . . . . . . . . ..(. . . ;_,,-” . . . . . ../.`~,. . ..`-.. . . . . . . . . . . . . . ..\. . /\ . . . . . . \`~.*-,. . . . . . . . . . . . . . . . . ..|,./.....\,__ ,,_. . . . . }.>-._\. . . . . . . . . . . . . . . . . .|. . . . . . ..`=~-, . .. `=~-,_\_. . . `\,. . . . . . . . . . . . . . . . .\ . . . . . . . . . .`=~-,,.\,. . . . . . . . . . . . . . . .\ . . . . . . . . . . . . . . . . `:,, . . . . . . . . . . . . . `\. . . . . . ..__ . . . . . . . . . . . . . . . . . . .`=-,. . . . . . . . . .,%`>--==`` . . . . . . . . . . . . . . . . . . . . _\. . . . . ._,-%. . . ..`
2012-07-24 22:42
math is to hard bro ?
2012-07-24 22:44
took me 5 seconds to fine the answer, and the answer is 2. 48 / 2 * (9 + 3)= 48 / 2 * (12) = 48 / 24 = 2 So im just troling around now.
2012-07-24 22:46
I dont want to write this again so read #182 and then #243 nothing to add here bro
2012-07-24 22:52
dont want to read cuz i know mine is correct.
2012-07-25 00:35
so you are ignorant... you cant multiply 1st cuz multiply and division are equal so you should calculate from left to right...
2012-07-25 02:02
u allways gonna calculate the bracket first... 48 / 2 * (9 + 3)= 48 / 2 * (12) = 48 / 24 = 2
2012-07-25 02:17
yes u always calculate the bracket first but in this case u already calculated the bracket had the equation been 48/(2(9+3)) then u are correct but its 48/2(9+3) =48/2(12)as u already solved the bracket its equal to =48/2*12 and not 48/(2*12) so 24*12 =288
2012-07-25 07:25
I thourd that Indian is cleaver in math unfurtently not. Were u did.. =48/2*12 and not 48/(2*12) u need to solve the right side first. then u can begun with left side.
2012-07-25 16:34
i didnt do that coz of the 'BODMAS' rule as i have said it depends on the way you are taught.we are taught with the 'BODMAS' rule and you are taught with that left right thing, unless you are doing some degree in math you can go here and check it web2.0calc.com/
2012-07-25 18:29
2 ? :(
2012-07-24 19:16
its 2 ... its simple
2012-07-24 19:20
Idiots everywhere...
2012-07-24 19:35
Seriously? Am I the only one that thinks it should be done like this: 48 / 2 ( 9 + 3 ) = 24 ( 9 + 3 ) = 216 + 72 = 288 It's actually correct, it's the same result you get by adding the numbers first... I'm just saying, I think this is the right way
2012-07-24 19:40
any way that comes up with 288 is probably a correct way. younger ages are taught a specific order (e.g., multiplication THEN division) just because it makes it clearer for their younger minds. in actuality integers have a lot of nice algebraic properties that give you leeway on choosing the order operations are applied edit: This is to say there is not simply one right way.
2012-07-24 19:46
Right...
2012-07-24 20:04
follow the BODMAS rule,the answer is definetely 2.kthxbye
2012-07-24 19:49
oh yeah? 48/2*(9+3) = 48/2*12 = 24*12 = 288 Once again: It all comes down to the question "what exactly means "/x?"". Answer: /x is a short-term for *x^(-1) resp. *(1/x). Therefor: 48/2*(9+3)= 48*(1/2)*(9+3) = 288
2012-07-24 19:58
You simply misunderstood the rule. Division does not take precedence over multiplication. They have equal priority, hence it's left to right and the answer is 288.
2012-07-24 20:23
+1
2012-07-25 04:51
with the BODMAS rule its 288 kthxbye
2012-07-25 07:26
if you follow BODMAS, then it's 288.
2014-04-28 04:39
to all of those who said 288, yes, i want fries with that burger.
2012-07-24 19:59
wow.. so many dumb ppl here? it's obviously 288
2012-07-24 20:02
its 288 , to chill you guys out asked my teacher too :D 48 : 2 * (9+3) = 48 : 2 * 12 following the left->right rule since multiplication and division are EQUAL , we have = 24 * 12 = 288 it's simple and elementary , guys who said it's "2" , i can call my math teacher again and tell her to come do you private lessons ;)
2012-07-24 20:17
In that case I'll call my CS professor who was the person that suggested the "invisible" multiplication sign to the UCS so he can tutor you and your teacher!
2012-07-24 22:58
invisible multiplication sign? its a well known fact in math that if you put a number and after it a parenthesis the number multiplicates everything inside the parenthesis.
2012-07-25 01:10
It's common sense and almost all highly respected mathematicians agree that that sign takes precedence to the conventional "*" sign! Meaning a/b(c+d) is the same as a/(b*(c+d))
2012-07-25 01:59
GOD DAMMIT Give me a fucking source about that. Unless you can it's just fucking wrong. I've never ever read about such a convention and I sure you won't find it in any well known literature. And just to make this clear: 99% of all mathematicians don't use that convention. I never ever saw someone using 2/5x for 2/(5x).
2012-07-25 02:13
It's not like I've read it somewhere random on the internet, and you can google it yourself! I've heard opinions on this topic from highly-respected mathematicians! FFS even calculators give different answers since they use different parsers, hence different interpretation! #15 here math.stackexchange.com/a/33216 explains the problem (that is if you were too stupid to somehow oversee it) so there's no point in arguing! Again I'm 100% that the vast majority of Math/CS professors and math/cs students agree on 2 as the answer!
2012-07-25 02:24
That's some random dude on a forum who didn't even mention the convention I was asking for... I got a bachelor degree in Mathematics (at one of the best university in Europe) and I've just finished my first master year. The majority of mathematicians does NOT use that convention. I read a lot of well known books and scripts and I never ever heard about such a convention. These kinds of terms are well defined (see #32) and I can't see any sense of such a convention. Every software and every calculator I ever used, does NOT use that convention (see #321).
2012-07-25 02:40
random dude on a forum => what I said that I haven't read that shit on the internet! I'm doing my BSc in Germany! I never said that it's a convention, you just made it up yourself! I do some stuff on web math searches and parsing and I know how calculators work and my own TI-89 gives me 2! Finally I think it's time we call an end to this pointless argue! Peace and I'm out
2012-07-25 02:48
It's not a convention?? So what is it?
2012-07-25 02:54
48:2(9+3) 2*9 + 2*3 18 + 6 48:18 + 6 2.66 + 6 = 8.66 or 48:2*12 48:2 24*12 = 288 I'm not sure but one of methods is right. Summer vacation is too damn long. Well, 2 is probablly wrong because it's nonsense to multiple first +/- < :/* and if they are equal you should follow order of numbers. Btw 9fagg sux
2012-07-24 20:38
I don't want to live on this planet anymore.
2012-07-24 20:52
If one strictly uses the standard order of operations to solve mathematical expressions, the answer to the problem would be 288, which is also the same solution provided by WolframAlpha and Google. By convention, the order of precedence in a mathematical expression is as follows: - Terms inside of Brackets or Parentheses. - Exponents and Roots. - Multiplication and Division. - Addition and Subtraction. If there are two or more operations with equal precedence (such as 10/2/5 or 7/2*9), those operations should be done from left to right. Solving for the answer 2 is sometimes a result of doing multiplication before division. Much of the confusion can be blamed on PEMDAS (sometimes known as, "Please Excuse My Dear Aunt Sally") and other similar mnemonics used to teach order of operations in schools. As an example, PEMDAS stands for: - Parentheses - Exponentiation - Multiplication - Division - Addition - Subtraction Whereas BEDMAS stands for: - Brackets - Exponentiation - Division - Multiplication - Addition - Subtraction The former can lead to the implication that addition always comes before subtraction, and that multiplication always comes before division. The latter can lead to the implication that addition always comes before subtraction, and that division always comes before multiplication. However, the answer 2 could be justified by the principle of implied multiplication. For example, consider the problem "2/5x." If one strictly follows the standard order of operations, the correct interpretation would be "(2/5)*(x)." But many calculators and textbooks state that a higher value of precedence should be placed on implied multiplication than on explicit multiplication: Because "5x" is implied to be "5*x," it gets higher priority than "2/5." In this case, "2/5x" would be interpreted as "(2)/(5*x)."
2012-07-24 21:09
lol @ the "implied multiplication". Never ever saw a textbook or calculator that uses xy := (x*y) instead of xy := x*y (everything I found about it is related to that stupid equation we're talking about and there's also no German expression for it). What kind of hardcore fascist came up with that idea?!
2012-07-24 22:35
never seen it written 2/5x but if i did i'd have to think it means (2/5)x
2012-07-24 23:08
= 288
2012-07-24 21:04
2 if you actually use your brain 288 if you're uneducated :)
2012-07-24 21:21
sure
2012-07-25 01:11
Please learn a math... the answer is 2 if you read : 48 / (2*(3+9)) the answer is 288 if you read : (48/2)*(3+9) Thank you.
2012-07-24 21:23
So if you have this exercise on a test paper, wich answer do you write? Just 1 answer is correct.
2012-07-24 21:38
1st because 48 / (2*(3+9)) = 48 / (2*3 + 2*9) = 48 / 2(3+9)
2012-07-24 21:40
Then why you give 2 answers if the correct one is 2? :)) Math is math, one exercise cannot have more than 1 correct answer (if there is numeral values involved).
2012-07-24 21:44
#272
 | 
Slovakia kubiaxk 
this is not math , this is syntax, know the difference ... This syntax 48÷2(9+3) = .wolframalpha.com/Calculate/MSP/MSP1821a.. = 288
2012-07-24 23:12
So if you say 1+1=2, it's not math? Ok. GL IRL.
2012-07-24 23:45
learn the math kubiakšo 48÷2(9+3) = 9-44 = NEVER FORGET
2014-04-28 03:40
If you have this on a test paper written like this, you should throw the paper in your professor's face and tell him to use fucking latex or microsoft equation :)
2012-07-24 22:41
Not at all. That's the point, to make the difference between the answers.
2012-07-24 23:48
When the question is stated like this there're arguments for both answers! That's why it's a common practice, no question to be written like this, rather latexed!
2012-07-25 02:03
2 indeed
2012-07-24 21:25
2, so hard..?
2012-07-24 21:27
2(3+9) = (2*3 + 2*9)
2012-07-24 21:30
First you have 48/2 which is 24 then you have 24(9+3)=24*9 + 24+3 = 288.
2012-07-24 21:46
Okay, we have the equation: 48 / 2(9+3) = x. Let's say 48 = y. Now we have: y / 2(9+3) = x. Sub x = 2. y / 2(9+3) = 2. y / 2(12) = 2. y / 24 = 2. y = 2*24. y = 48 (correct! Yay!) Now, let's do the same but sub in x = 288 (as so many of you believe...) y / 2(9+3) = 288. y / 2(12) = 288. y / 24 = 288. y = 288*24. y = 6912. Go back to school. GG
2012-07-24 21:47
math.about.com/library/weekly/aa040502a... /close elementary school stuff. and if you were in the higher classes you would've learned that what you said does not always apply. but you are only 16 and you will learn one day how to do this.
2012-07-24 21:50
Its not about the age. Explain this: y = 288*24. y = 6912. /close
2012-07-24 21:53
i explained. that rule doesn't always apply. 12th grade maths and even so, read the page i just wrote and you will se i'm right.
2012-07-24 21:54
Please... "i explained. that rule doesn't always apply. 12th grade maths" Made me laugh.
2012-07-24 21:57
It's not only about hltv's users education. Use calculator in Windows :-/. It says 288 is correct :D
2012-07-24 21:51
Reason why programs say its 288 but single math with x & y say its different: physicsforums.com/showthread.php?t=48833..
2012-07-24 21:55
Let me explain you why you're wrong: In both equations you made the mistake of interpreting a term like a/b*c as a/(b*c) and that's wrong. a/b*c stand for a*(1/b)*c. Algebraic convention, see #32. Of course y won't be 288 if you're doing that mistake since that mistake is what you led to the wrong answer 2.
2012-07-24 22:09
bad reply :D
2012-07-24 22:44
Correct!
2012-07-26 16:00
y/2(9+3) != y/2(12) - y/2(9+3) == 9y/2 + 3y/2 --- From that basis: Sup. x = 2 y/2(9+3) = 2 9y/2 + 3y/2 = 2 12y/2 = 2 y = 2*2/12 y = 1/3 ---> wrong; y = 48 --- Sup. x = 288 y/2(9+3) = 288 9y/2 + 3y/2 = 288 12y/2 = 288 y = 288*2/12 y = 48 ---> right; y = 48 Clearer than water, stop spreading false answers.
2014-04-28 21:27
LOL NO... first you add 3 to 9 and then multiply... -,-
2012-07-24 22:06
Its the same result rofl.
2012-07-24 22:07
he edited post.
2012-07-24 22:30
Equation is 48/2(9+3), not 48/2*(9+3). Both are different. Idiots :|
2012-07-24 21:30
they are not
2012-07-24 21:43
Different? Really? I hope you are trolling.
2012-07-24 21:48
Yes they are! #226 That's why nobody writes expressions like that, but they're all latexed!
2012-07-24 22:36
#240
2012-07-24 22:41
+1 Handwritten the difference is undeniable, but written like this, it's tricky -.- that's why everybody uses latex -.-
2012-07-24 22:39
288 lol .. who says something else should go to school
2012-07-24 21:39
hahahahaahhaha you should go then, dumbass
2012-07-24 22:06
Are you dumb? It's clearly 288,shithead 48/2*(9+3)=48*(1/2)*12=288 moron
2012-07-24 22:34
#226
2012-07-24 22:37
You can't be fucking serious man. It's the same: 2(9+3)=2*(9+3)
2012-07-24 22:41
It's reasonable to expect such confusion from someone that's not a math/CS major! This shit goes deeper than you think...because of stuff like this math search engines are hard to design, and that's why everybody uses latex!
2012-07-24 23:04
you clearly do not know how to do 8th grade math. 48/2(9+3) 2(9+3) is it's own statement, you CANNOT DISTRIBUTE IT TO THE NUMERATOR. You must distribute the two to the 9 and then to the three. It is 2 x 9 + 2 x 3 = 18 + 6 = 24 48/24 = 2. Who's the moron?
2012-07-24 22:58
Oh dear,oh dear,oh dear 1. Brackets: (9+3)=12 2. From left to the right,because priorities are the same: 48/2*12=24*12=288 you're the moron
2012-07-24 23:21
The reason you came to that conclusion is because you interpreted the division sign to be literal. But in reality you would not solve it that way because it would be written as 48/2(9+3), which would really mean 48 ÷ [x(9 + 3)]. The argument is in the way it is written, which is all fucked up. But if you were to solve that way using PEMDAS as a straight reference you would not be wrong, but again it would never be written this way.
2012-07-25 00:06
you're a total idiot...
2012-07-25 14:41
i'd break you apart small polish crap from under the nails
2012-07-25 16:42
yeah yeah, for sure.. result is 2, kthxbai
2012-07-25 16:45
proof,small tard?
2012-07-25 16:47
I just know, tard
2012-07-25 19:00
What can you know having 15 years from birth? How to close porn faster so your mama didn't see?
2012-07-25 19:15
Not funny at all. It just shows that I know such an easy thing in maths and you don't. Sad but true. Anyways, don't want to discuss anymore. BYE
2012-07-25 19:55
#193
 | 
Poland camarpl 
i love those threads because they are full of trolls
2012-07-24 21:43
2, trust me, im engineer HAHA!
2012-07-24 21:43
#207
 | 
Latvia 6matko 
#198 very correct! Answer is 2 and u can troll all u want ;] P.S. ( ) - Always goes first :]
2012-07-24 21:55
2012-07-24 22:15
It's really tricky! Don't try any softwares cause software do plain direct computing and miss out on details that a person would see while the software needs clarification! The way it's written now it's 48/2(9+3) firstly you need to do the distribution property since 2(9+3) is the expression not (9+3) hence you have (2*9+2*3) -> 48/24 = 2! However 48/2*(9+3) is a whole different shit, since you do the brackets first 48/2 * 12 and you get 288! Softwares do the latter! The ones that think I'm wrong... well... I can't you force you to be right
2012-07-24 22:32
288, you mindfucks, looks like CS ate your brain
2012-07-24 22:35
+1
2012-07-24 22:48
knowyourmeme.com/memes/48293 Please read it carefully.
2012-07-24 22:51
It's so funny that people are actually calling others dumb/stupid while they're the ones that are wrong. Ohhh, sweet irony... The answer is 288 and nothing else.
2012-07-24 22:55
you're wrong though... pretty ironic.
2012-07-24 23:03
Since it's NOT 48/(2(9+3)) it can be also written like this: 48 * (1/2) * (9+3), if you're calculating with PEMDOS method you should be aware that divide and multiply shares the same priority.
2012-07-24 23:14
Technically you are right, but the reason you came to that conclusion is because you interpreted the division sign to be literal. But in reality you would not solve it that way because it would be written as 48/2(9+3), which would really mean 48 ÷ [x(9 + 3)]. The argument is in the way it is written, which is all fucked up. But if you were to solve that way using PEMDAS as a straight reference you would not be wrong, but again it would never be written this way. So you are indeed right, but the question is a mindfuck.
2012-07-25 00:11
You're right. If it was written like this:    48            48 --------- or ------ * (9+3) the answers would be clear. 2(9+3)         2 But if we just look at it as it is right now, the answer is 288.
2012-07-25 00:23
Why the fuck should 48/2(9+3) stand for 48/(2(9+3))?! Source?
2012-07-25 00:20
#263
 | 
Slovakia kubiaxk 
2012-07-24 23:04
Yes!
2012-07-24 23:06
Ill post this again so people see it. This is how you solve this. This is knowledge that you should know when you are about 14. 48/2(9+3) 2(9+3) is it's own statement, you CANNOT DISTRIBUTE IT TO THE NUMERATOR. You must distribute the two to the 9 and then to the three. It is 2 x 9 + 2 x 3 = 18 + 6 = 24 48/24 = 2.
2012-07-24 23:00
Be honest: Did you really learn that "xy" stands for "(x*y)" and not just "x*y"?!
2012-07-24 23:03
what are you asking?, in regards to an isolated statement with variables those are the same thing x = 2 y = -3 xy = -6 (xy) = -6 x*y = -6 if there is parentheses the statement is isolated. Oh course I know that 2(xy) is not the same as 2xy. Math is a universal language of fact, it is not open for interpretation. So what exactly are you getting at?
2012-07-24 23:12
Well, thats the point 2(xy)=2xy
2012-07-24 23:17
How do you mean 2(xy)=2xy? 2(xy)=2*(x*y)=2x*2y=2x2y At least I think it's like that :3
2012-07-25 06:41
Suppose: x = 1 y = 5 2(1*5) = 10 2*1*5 = 10 2(xy) = 2xy. Multiplication is CONMUTATIVE (changing the order of the factors does not change the result) Suppose: x = 1 y = 5 z = 10 w = 8 2(1*5*10*8) = 2(400) = 800 2*1*5*10*8 = 800 2*10*5*8*1 = 800 EDIT: What you say is wrong: 2(xy) does not equal 2x*2y. It equals 2x+2y (Associative)
2014-04-28 21:36
hahahahahahahaahah dude you just made my day :D YOUR ARGUMENT IS INVALID, COME 2 YEARS AGO KKTY :D
2014-04-28 21:41
?? My argument is right. 2(xy) == 2xy or 2(xy) ---> CONMUTATIVE 2(xy) != 2x*2y ----> ??? Based on? 2(3*1) = 2(3) = 6 2(3*1) = 2(3) * 2(1) = 2 * 3 * 2 * 1 = 13 ---???? EDIT2: I failed at the associative, thought it was 2(x+y) not 2(xy), my bad.
2014-04-28 22:11
My question is: Why do you think x/yz means the same as x/(y*z)? Do you also think x/y*z is equal x/(y*z)? ps: 2(xy) is actually the same as 2xy. Classic convention in a associative structure.
2012-07-24 23:22
#312
face | 
World knwn 
2(xy) is no the same as 2xy? lol
2012-07-25 00:20
it would be 2 if 48/(2(9+3)) !!!! don't talk BS!
2012-07-25 10:25
It's 2. First we calculate in brackets.
2012-07-24 23:09
fack, didnt reply
2012-07-24 23:12
#277
 | 
Slovakia kubiaxk 
kids / is not equal ÷ ...
2012-07-24 23:14
Source?
2012-07-24 23:23
#263
2012-07-24 23:26
ahaha LOL Don't you see the difference? In the first one he added some brackets, while in the second one he didn't use them. If you add those brackets in the second one, you get the same as in the first one: wolframalpha.com/input/?i=48%C3%B7%282%2.. / means the same as &#65533;.
2012-07-24 23:31
I see the difference. I just showed you his source. :)
2012-07-24 23:31
We are discussing here a totally different thing. He wrote 48/(2(9+3)) and 48÷2(9+3) which are 2 different problems. 1. 48÷2(9+3)=48/2(9+3) 2. 48/(2(9+3))=48÷(2(9+3))
2012-07-24 23:33
2012-07-24 23:26
math is a fcking pain in the ass
2012-07-24 23:28
You should've sticked to your first comment. Just jump with your face on a fucking palm with your "2" answer.
2012-07-24 23:31
the way it`s written makes it confusing 48: 2(9+3) is different from 48:2*(9+3)
2012-07-24 23:51
Sorry, but there isn't a difference.
2012-07-24 23:56
the 1st one is 48 divided by 2 multiplied by the sum of 9+3 the 2nd one is 48 divided by the double sum of 9+3 many think it`s a shortcout but it`s not (48÷2)(9+3) = 288 48÷[2(9+3)] = 2
2012-07-25 00:08
Give me a source where a missing multiplication sign implicates brackets. In 99,9% of all mathematical lectures xy is just a simplification of x*y, nothing more.
2012-07-25 00:16
48 --------- = 2 => 48/[2(9+3)] 2(9+3) or 48 -- (9+3) = 288 => 48/2 (9+3) 2 so it`s 288 ,don`t see any reason to go further
2012-07-25 00:25
That's right, but why did you write: "48: 2(9+3) is different from 48:2*(9+3)" What makes it different? The missing multiplication sign? Why should that change something?!
2012-07-25 00:35
#318
2012-07-25 00:39
Give me a source where it states this as true: 48 --------- = 48: 2(9+3) 2(9+3) The correct answer would be: 48 --------- = 48:(2(9+3)) 2(9+3) And ill tell you the last time that 48:2(9+3)=48:2*(9+3)
2012-07-25 01:12
#324 Give me a source where it states this as true: 48 --------- = 48: 2(9+3) 2(9+3) I didn`t say that !?
2012-07-25 01:33
pick a calculator, type the thing the exact same way it's written here, you'll get 2 as a result. add a multiplication sign between the 2 and the (9+3) you'll get 288.
2012-07-25 00:39
Calculators: Texas Instruments TI-30XIIS: 48/2(9+3) = 288 Texas Instruments voyage 200: 48/2(9+3) = 288 Software: Maple: 48/2(9+3) = 288 Mathematica: 48/2(9+3) = 288 Matlab: 48/2(9+3) = 288 Maxima: 48/2(9+3) = 288 octave: 48/2(9+3) = 288 scilab: 48/2(9+3) = 288
2012-07-25 00:46
If equation is written like this: 48÷2(9+3) programs execute it like 48 --------- 2(9+3) and 48/2(9+3) programs execute it like 48 ---- (9+3) 2 Problem solved.
2012-07-25 03:14
What program does that? I've just tested some software. Most don't even use the first sign but those who do (eg Mathematica and xN) use it equal to /. Example: wolframalpha.com/input/?i=48%2F2%289%2B3.. wolframalpha.com/input/?i=48%C3%B72%289%..
2012-07-25 03:24
2012-07-25 07:15
don't even bother with them -_-
2012-07-25 11:37
it's not ... when there are no sign between numbers that automaticaly means you multiply them.
2012-07-25 00:06
+288 !!!
2012-07-25 10:22
GOD SAID ME THAT ANSWER IS 2 PLS CLOSE
2012-07-24 23:43
The answer is somewhere between 1-300
2012-07-25 00:02
288 since first rule is operations are from left to right and since divide and multiply are equal so you first divide and then multiply 288 there you go/thread
2012-07-25 00:11
There isn't a rule "from left to right" ask your teacher, please :3
2012-07-25 03:08
don't embarrass yourself
2012-07-25 10:20
congratz you have won $1,000,000.
2012-07-25 17:56
it's rule bro.
2012-07-25 14:30
it's done this way because multiplication & division are equal.
2014-04-28 05:02
Wow, i've known that many people are dumb, but this thread just amazed me. It's 288, just read RUHEJETZTI's and soupe's posts and you'll understand.
2012-07-25 00:15
+1 case closed.
2012-07-25 01:35
2 imo
2012-07-25 00:40
ASASASADBUNCHOFDUMBFUCKSHEREOHGODASDSA = 2
2012-07-25 01:03
matematicians.....matematicians everywhere btw 2
2012-07-25 01:12
#327
 | 
Russia Nzr0 
dont want to be rude or something but i think you didnt learn a shit in school.
2012-07-25 01:13
It's fucking 2 ! :O
2012-07-25 01:37
2
2012-07-25 01:39
the right answer :)
2012-07-25 05:44
As I learned in school, the multiplication is older operation than division. And you should do multiplication part first, then you have to do division, subtraction & addition. 48:2(9+3)=48:2(12)=48:24=2 So result is 2.
2012-07-25 02:49
go back to school
2012-07-25 10:19
Hmmm, okey.
2012-07-25 17:49
Do you think this is correct?
2012-07-25 17:50
as someone who's spent the last 7 years in college for math, yes, i know it is. i have an m.a. and in two years i will have a phd. your mistake is in saying multiplication has higher priority than division. division and multiplication have the same priority, like addition and subtraction have the same priority. you should do inside the brackets first, then evaluate left to right division and multiplication in the order they come
2012-07-25 18:07
2012-07-25 06:12
48/2(9+3) 48/2(12) 48/(12)2 4*2 8 The answer is 8 Bye bye
2012-07-25 06:36
+1
2012-07-25 06:37
troll much bro?
2012-07-25 07:04
a little fail attempt :D
2012-07-25 16:08
nice troll btw :))
2012-07-26 02:14
48/2(9+3) 48/2+9+3 24+9+3=36 36/12=3 half-life 3 confirmed ez
2014-04-28 05:04
haha...nice post :-D
2012-07-25 06:50
hey, xb0y, where the phuck did you learn that c(a+b) is a single term? IT IS NOT. c x (a + b) = c (a + b). DONE! We remove the multiply signal "x" because it's redundant. So every times you see smth like this c(a+b), you MUST UNDERSTAND that there is a missing "x" between. In the beginning they could have chose any thing, e.g. c(a+b) = c+(a+b) or even c(a+b) = c^(a+b), but they didn't. WHY? I DON'T GIVE A PHUCK BUT THE FACT IS THEY DID IT. So please stick with it as long as we are talking about the same "math". Now back to the problem. If you understand all that i've said (which was taught in 3rd grade!), it should be khrystal clear! 48/2(9+3) = 48 * (0.5) * (9+3) = 288 1st step: brace(s) first 9+3=12. then we have 48/2(12) or 48/2*12 same shit. 2nd step: since it's only multiplication and division left we do the math from LEFT to RIGHT. therefore > 48/2=24 > 24*12=288 note when it's only "*" and "/" left you can reorder the equation any way you want as long as the relationship between the numbers is not changed. e.g. 48/2*12 = 48*12/2 = 12*48/2 = 12/2*48 = 1/2*48*12. AS LONG AS THE "/" IS IN FRONT OF 2 and "*" IS IN FRONT OF 48 and 12. AND THEN AGAIN DO IT FROM LEFT TO RIGHT. to anyone who keep saying the answer is 2, please give me a damn source to prove i'm wrong! thank (and phuck) you (ignorant) peace
2012-07-25 07:33
#373
 | 
Poland Marvelm 
+infinity Everything this guy says is correct, xb0y has no clue what he's talking about.
2012-07-25 07:34
2012-07-25 07:35
oh and now you switch to this shit. who the fag told you that "/" must be understand like that? You know why the programmers use "/" to replace the ":"? Because ":" has it's own business to mind, he cannot carry so much! As typing "/" alone it means ":". No excuses please =D
2012-07-25 07:41
It means DIVIDE in algebraic equations.
2012-07-25 07:46
2012-07-25 07:52
#384
 | 
Poland Marvelm 
I already answered to you about that. Casio calculators don't have the option to skip signs and still count the way they are supposed to. Refer to post #321 to see how the good Texas calculators do it.
2012-07-25 08:03
#379
 | 
Poland Marvelm 
The amount of ppl knowing SHIT is too damn high.
2012-07-25 07:43
I am so amazed of how much people argue and how many people care so much. aahahhahaah Let me troll you something. Answer 288, not 2! Done!
2012-07-25 10:01
Trollception right here, good work.
2012-07-25 10:14
very hard not
2012-07-25 10:07
stupid dumbfucks... multipling is older and you do it first ? are you fucking sane? if you spent your time in elementary school hitting the blackboard with your head then at least google the order of math operations! 1. Calculations must be done from left to right. 2. then you do the operetion in the brackets : 48/2*(9+3)=48/2*12 3. Exponents (or radicals) must be done next (none in this example) 4. multiply and divide in the order the operations occur: 48/2*12= 24*12 =288 5. Add and subtract in the order the operations occur (none in this example) step by step for idiots which are common in this thread
2012-07-25 10:16
48/2(9+3) = 2. Why so? 'Cause the 2 before the paranthesis was in the paranthesis (2*9+2*3). It was factored and simplified so that it appears like 2(9+3). This is a entire expression and must be calculated alone and after you do the rest of the operations there, you dumbfuck.
2012-07-25 10:25
NO IT IS NOT! it would be 2 if 48/(2(9+3)) but all of you probably think that 48/(2(9+3)) = 288.....
2012-07-25 10:28
#398
2012-07-25 10:29
Read this if you don't understand from my explanation, you're dumb as fuck, really. Okay, this is driving me nuts because the answer is 2, not 288 and you're an idiot if you think it's the latter. Firstly, PEMDAS. Multiplication and then divide, not this left to right bullshit. Second, we can prove that x = 2 by subbing that into the original equation and making one of the other numbers an unknown. Okay, we have the equation: 48 / 2(9+3) = x. Let's say 48 = y. Now we have: y / 2(9+3) = x. Sub x = 2. y / 2(9+3) = 2. y / 2(12) = 2. y / 24 = 2. y = 2*24. y = 48 (correct! Yay!) Now, let's do the same but sub in x = 288 (as so many of you believe...) y / 2(9+3) = 288. y / 2(12) = 288. y / 24 = 288. y = 288*24. y = 6912. Hrmm...bit different, eh? Now, go back and do that for any of the elements in the equation. You'll find x=2 is correct for every single one, but x=288 yields wildly different answers. There. Done. PROVEN using very basic mathematics from someone who has done 3 years of engineering. Seriously, can't believe I had to lay it out, step by step...maths teachers, pick up your game! Ugh.
2012-07-25 10:28
YES YOU ARE RIGHT IF THE EQUATION WAS WRTITTEN LIKE THIS: 48 _______ 2(9+3) = 2 but in the picture it's like this : 48:2(9+3)=? d24w6bsrhbeh9d.cloudfront.net/photo/4840.. it's a matter of mathematical convention! That is why no1 uses ":" for serious math problems,because it turns out to be "false",like you have proven...! And it's written on purpose like this for people to start arguing!!!!! 48:2(9+3)=288 48 ______ 2(9+3) = 2 *both bolded are correct!!!
2012-07-25 10:59
Your resonement dont even explain the all thing so dont tell people they are stupid. with your resonement Let's say 48 = y. Now we have: y / 2(9+3) = x. Sub x = 2. y / 2(9+3) = 2. y / 2(12) = 2. y / 24 = 2. y = 2*24. y = 48 (it's correct because you multiply before divise) now with the 288 result.. Let's say 48 = y. Now we have: y / 2(9+3) = x. Sub x = 288. y / 2(9+3) = 288. y / 2(12) = 288. y x 12 = 288x2. y = 576 / 12. y = 48 (correct again.) You see my point ? I always learn that 2/2(1+1) is the same than 2/2x(1+1). but again it can be a way to teach easily to student in "basic scool". If someone who have be better maths school than me can say me if, it was or not a easily way to teach and that false, than thanks to him. So again, stop say ppl are dumb when your resonement is false. thanks.
2012-07-25 11:07
his mistake was that he looked at the equation as 48 ___ 2(9+3) = 48:(2(9+3)) and not as it was shown in the picture 48:2(9+3) so if you calculate like this 48/2*12=24*12=288 then you need to follow the same order just backwards: x/2*12=288 288/12=x/2 [you multiplied by 12 to get the final result,so now you divide 288 by 12 first,the rest is simple] 24=x/2 x=2*24 x=28 *this is done by the rules of the mathematical convention!
2012-07-25 11:34
x=48 -_- fuck my typing skills :)
2012-07-25 11:52
This was probably one of the worst "proofs" I've seen. You assumed in your proof that your understanding of the actual problem was correct, which has absolutely nothing to with proving things. The actual problem that people have trouble with is whether the notation a / b(c+d) equals a / (b(c+d)) or (a/b)*(c+d). In your so called "proof" you already assumed that it means a / (b(c+d)) and totally bypassed the issue. In fact, there is nothing to prove here. The problem is a matter of notation, which is an issue of agreement, not some universal fact that needs proving. Also when you say that multiplication would always come ahead of division is not correct, and the operations are done from left to right. For instance, 1/2*3 = 3/2 and not 1/6. This is also a matter of agreement what actually happens when there are no parenthesis to point out the order of calculation. This whole thing also has very little to do with people not knowing basic math, since this is no doubt a poor notation to use and even a relatively mathematically experienced person can misinterpret it.
2012-07-25 12:09
+1
2012-07-25 12:23
true. worst ever. what a dumb logical mind he has. "hey this is problem A. I use X technique to solve it, which leads to answer B. You use technique Y >> answer C. Let's rewrite problem A so it's now problem P, then use technique X to solve problem P, which 'prove' B is the correct answer. Therefore technique Y is trash and answer C is shit. You guys stupid!" It's like eating your own poops.
2012-07-25 15:50
finally.
2014-04-28 05:08
I can't believe that someone still says it's different result than 2. This one is very easy. I was learning this like in 6 or 7 class. 48 / 2(9 + 3) first you go for 2 x 9 = 18 then 2 x 3 = 6 18 + 6 = 24 48 / 24 = 2 ^^
2012-07-25 10:34
#401
 | 
Czech Republic mica1 
288 lams
2012-07-25 10:36
simple as fuck
2012-07-25 10:40
1337
2012-07-25 10:54
easy...
2012-07-25 12:07
omfg....a lot of people from here don't know basic maths.
2012-07-25 12:20
I find it sad that so many people are calling others dumb over stuff like this. Also some seem to feel some sort of superiority when they think that someone "can't do simple math" when it actually is a confusing notation that trips people into calculating the wrong thing. People even say that they learned "stuff like this" in 6th grade and then don't understand the issue themselves. The actual issue is whether the lack of "*" in a / b(c+d) implies that b(c+d) is a single expression which should be evaluated first. If the "*" is present [ a / b * (c+d) ], then c+d is evaluated first, then a/b and the multiplication is evaluated last due to existing agreements. I've never actually run into a discussion of whether the lack of "*" implies a different order of calculation during my studies. The reason for this is that it is relatively pointless. You should always use clear notation when you can, and thus use for instance latex for typesetting your equations, or at least use extra parenthesis if you are worried that any ambiguity may be present.
2012-07-25 12:27
it can be confusing if you didn't learn it properly. but this was in my tests in elemetary school all the time,because it's considered to be a trick question.But honestly this is basic. Still i also kind of understand the mistakes because this kind of notation is out of use on high school /college level math so many probably misunderstood it. But then again if their argument is that you multiply first or about the different forms "2(9+3)" and "2*(9+3)"... well that's just being dumb...
2012-07-25 12:45
Yea, the thing is that as far as I recall in our schooling we don't even really spend time on this kind of notation. My first intuition is that we drop the multiplication sign as normal and calculate the divisions and multiplications from left to right. But you are right that this kind of notation isn't really seen in "higher level" math since this is not really what math is about. Notation is just a tool, and not something one should spend a lot of time mastering since generally a very clear notation is used anyway. Even if this notation should be clear, it's much faster to read when it is written cleanly using numerators and denominators
2012-07-25 13:29
I agree completely. But still after numerous posts that explain this "case" in detail people still fail to understand what kind of problem the picture shows... The picture shows 48/2(9+3)= 24*12 =288 ! because multiplication and division hold equal precedence! also everything is written in one line so for you to be able to solve the equation like this "48/24" it must be written like this 48/(2(9+3)),because these symbols "/" or ":" written in one line do not imply this: 48 _____ 2(9+3) ? I hope you all will understand this much.... 48 ___ * (9+3) 2 equals to 48/2(9+3)
2012-07-25 14:15
Such debate for a simple math question, so many calculators involved. It's like if you use "Google translate", this tool will never translate your sentence with the sense that you want. So is with those calculators you posted. My answer is 2. Ask your class teachers.
2012-07-25 12:45
for me is 2 , but the calculators says 288.... so?
2012-07-25 13:04
So you trust those thousands of calculators?
2012-07-25 13:20
:O Srsly! anyone who finds this question tricky or hard, must be like 9year old or Illiterate! and its 2 ^^
2012-07-25 13:03
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2012-07-25 13:02
Parentheses go first! That's the only rule you need to know here: 48/2(9+3) 48/(18+6) 48/24 2
2012-07-25 13:05
read some posts before...
2012-07-25 14:15
yes, parentheses go first. that means 9+3 is done first, not 2(9+3). parentheses first means do the INSIDE of the parentheses first. wolframalpha.com/input/?i=48%2F2%289%2B3..
2012-07-25 17:39
less counter-strike and more school mate
2012-07-25 13:10
God... Its fucking 288. 48/2(9+3) 48/2x12 24x12 288 Any questions? EDIT: I'm not sure about math term in english so... I could do it in 1st elementary school class, really... Firstly, you sum numbers in parentheses or how the hell you were calling that. So 9+3 is 12. If there's some number before the parentheses without any sign, then it means, that you have to multiply result from the parentheses with a number, that's before the parentheses, so it's 2x12, BUT YOU'RE NOT DOING IN YET. If you have divisibiliying and multiplying in one function (sorry, I didn't know how to say it...), then you're just doing all the thing from the left, to the right, like you were reading. So you have something like this: 48/2x12 You are divisiblitying 48 and 2, and it's 24. Then you have this: 24x12 And it's 288. Hope you'll understand me :p
2012-07-25 13:33
48 / 2(9+3) 48 / (2*9+2*3) 48 / 24 2 it can also be written as a fraction: 48 ______ 2(9+3) 48 _ 24
2012-07-25 14:03
The REAL form of a fraction is this one: 48 --(9+3) 2
2012-07-25 15:27
nope a / 2b is a -- 2b NOT a -- * b 2
2012-07-25 16:45
2b or 2*b are the same thing. The "*" sign can be omited (is not required) if it is betwen a bracket and a number or another bracket. And because of this the ecuation looks as I wrote.
2012-07-25 17:02
48 / 2(9+3) = 48 / (2*9 + 2*3)
2012-07-25 17:07
Wrong: 48/2(9+3) = (48/2*9 + 48/2*3) And: 48/(2(9+3)) = 48/(2*9 + 2*3)
2014-04-28 21:54
sorry man but you have the wrong order in two different ways. you always do inside brackets first, meaning add 9+3=12, giving 48/2*12. all that's left is multiplication and division, which are equal in precedence, so you just do them in order from left to right, ie 48/2*12=24*12=288 the wikipedia article on order of operations is very good if you are confused about how to do this en.wikipedia.org/wiki/Order_of_operation..
2012-07-25 23:29
have you ever heard of distributive property of multiplication? 2(9+3) is one statement and cannot be divided. it can be also written as 2*9 + 2*3 x / 1y =/= x/1 * y
2012-07-26 01:24
No man, that's not what the distributive property says. The distributive property says nothing about it not being able to break up. It is solely a rule for how multiplication distributes over addition. Literally every source on algebra verifies that. Please provide one that says it can't break up :)
2012-07-26 01:26
lol, are you blind? well obviously you're not so watch this. a(b+c) = ab + ac HENCE 2(9+3) = (2*9 + 2*6) = 24 you are not gonna find a sentence in a book explaining the distribute property that would say EXACTLY that 2(9+3) is an individable statement. however, you will find the fact that: 2(9+3) and 2*9 + 2*3 are the same digit and that is 24. now your logic would be: x / 1y = x/1 * y but that is nonsense. or applied to this problem: 48 / 2(9+3) = 48 / 2*9 + 2*3 = 48/18 +6 and that is also nonsense. I hope I have been clear enough.
2012-07-26 02:10
GOD, you DON'T DO 2*9+2*3 first, but you sum 9+3, and then you multiply 2 and sum of 9 and 3 what is 12.
2012-07-26 17:52
48 _______ 2(9+3) = 2
2012-07-25 13:36
you have your order of operations wrong. first you do brackets: 9+3=12. then multiplication and division is left, which have equal precedence, so you do both one by one moving left to right: 48/2*12=24*12=288 if you are confused about this, the wikipedia page on order of operations spells it out well. en.wikipedia.org/wiki/Order_of_operation..
2012-07-25 23:27
48 : [2{9+3)] = 48 : 24 = 2 this is the way eventhouh parenethesis are not there this is so old n stupid it is written wrong to make u fight for a stupid reason #436 gave same example
2012-07-25 13:47
Actually having read many many many of the comments and second links, it appears we are taught shit in school, because PEMDAS, BODMAS, BIDMAS or whatever you are taught to learn the order of operation, leads us to believe multiplication comes before division. The correct thing is PEMA which says multiplication and division inherently share the same precedence, just like addition and subtraction inherently share the same precedence. Wikipedia has a good article on it where PEMDAS says. 10-3+2 = 5 but in reality we have +10, -3 and +2...if you add them together we have 9 which PEMA tells us. edit: link en.wikipedia.org/wiki/PEMDAS#Mnemonics And by some other guy.. The answer is 288. I've been teaching math and computer science at the University of Maryland for 19 years, so please think twice before calling ME a moron. PEMDAS is misleading because multiplication and division are actually done SIMULTANEOUSLY from left to right. It's called left associativity. The distributive property DOES apply, but what is being distributed is the quotient (48/2) not just the value 2. What is REALLY demonstrated here is that it is a terrible idea to mix the old-fashioned division symbol with the "implied" multiplication imposed by parentheses. Please don't ever write an expression like this! If you have any questions, please feel free to drop by my office hours. ;-) But I also bet the vast majority of the people saying it's 288 have been using bad math, and they didn't conclude it on the issue mentioned above :)
2012-07-25 14:08
According to BODMAS we have a operations of first level (BRACKETS), ,then we have operations od second level (ORDER, DIVIDE, MULTIPLY), and operations of third level (ADD,SUBTRACT). From this task 48/2*(9+3)we can see that there are first (BRACKETS) and second (DIVIDE,MULTIPLY)level operations. So we should first solve BRACKETS, and we come to this 48/2*(12). Now we have two sequentual second level operations. According to BODMAS when we come to this situation mathematics proceeds from left to right so: 48/2*12=24*12=288...
2012-07-25 14:26
i really thought that only 10 out of 100 would be wrong as i consider this to be a basic equation to test your knowledge about the order of operations but this thread becomes more and more frustrating to me.... i don't know what you mean by this "But I also bet the vast majority of the people saying it's 288 have been using bad math, and they didn't conclude it on the issue mentioned above :)" You also explained this in a way that like 99% wouldn't understand :) Imo the main problem that the users are confused with is that they don't know about this "The correct thing is PEMA which says multiplication and division inherently share the same precedence". Also they conclude that 48:2(9+3) equalas to 48 ___ 2(9+3) which it does not...
2012-07-25 14:29
i m sure you know that the given example is written in a bad way and i m sure that what i wrote about the parenthesis is right
2012-07-25 17:11
The answer is 2 ;)
2012-07-25 14:06
,,,,
2012-07-25 22:59
stephen wolfram is a genius, and having visited their company, i can say with experience he surrounds himself with very motivated and smart mathematicians. multiplication and division are equal in when they occur by routine, as addition and subtract are to each other. you need to do the inside of the brackets first, then move left to right in order. do it in any computer algebra system (sage, maple, mathematica, scipy, whatever), and it will show you the answer is 288
2012-07-25 23:00
I putted that in Casio FX-9860 GII and she said 2... She never lies to me :)
2012-07-25 23:03
That's because the calculator uses a lack of multiplication sign to be inherent parentheses en.wikipedia.org/wiki/Order_of_operation.. Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer.
2012-07-25 23:12
No logic. 1st multiplication.
2012-07-25 22:57
According to BODMAS we have a operations of first level (BRACKETS), ,then we have operations od second level (ORDER, DIVIDE, MULTIPLY), and operations of third level (ADD,SUBTRACT). From this task 48/2*(9+3)we can see that there are first (BRACKETS) and second (DIVIDE,MULTIPLY)level operations. So we should first solve BRACKETS, and we come to this 48/2*(12). Now we have two sequentual second level operations. According to BODMAS when we come to this situation mathematics proceeds from left to right so: 48/2*12=24*12=288. It's my opinion any suggestions?
2012-07-25 14:22
u r RIGHT :)
2012-07-25 14:28
THank you. This task looks easy and simple but acctually its very tricky. And it has purpose to discuss not to insult each others like kids from this site do.
2012-07-25 14:32
simple as fuck, #447
2012-07-25 14:25
48:2[9+3]= 48:2x9+2x3 so 48:18+6 = 48:24 = 2 so the answer is 2
2012-07-25 14:26
I think that you are wrong.
2012-07-25 14:35
If it is how you say => 48:2x9+2x3 = 48:18+6 = 2,666+6 = 8,666 :o maths rulle
2012-07-25 15:24
you're right.
2012-07-25 16:23
nop 48:(2x9+2x3) so 48:24 = 2
2012-07-25 22:54
so you basically said that 2(x+y) = (2x+2y)? Lol. 2(9+3) is either 18+6 or 2*(12) but since it's 48/2(9+3) then it's either 48/18+6 = 8.66 because division > addition or 48/2*12 = 288 because division = multiplication => we do it in the order from left to right. 48/(2(9+3)) = 2, but it isn't this case.
2014-04-28 05:26
lol sorry, didn't check the time when this thread was created.
2014-04-28 05:37
Dayummmm 2 years! XD nice dude.
2014-04-28 05:43
no, you do INSIDE the brackets first. that's why the BO is said to come first, then you do multiplication and division left to right as it comes because they are equal in precedence. Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer.
2012-07-25 23:13
48:18+6 = 8.66 since division > addition & 18+6 aren't in brackets.
2014-04-28 05:22
actualy there were lot of explainations using right math rules and using calculators. Pointing to 288, but there are still people that believe it's 2.
2012-07-25 14:36
288. sorry, slight miscalculation there, its not 48 =DD
2012-07-25 14:52
HAHAH
2012-07-25 14:48
#468
dsn | 
India sRik 
The answer is 288 guys. It isn't 2. The precedence of an implied multiplication e.g. 2x being 2 × x also varies by source. For example, Wolfram Alpha considers that implied multiplication precedes division, e.g. 2x÷2x gives 1 instead of x², except where parentheses are adjacent, e.g. 48÷2(9+3) gives 288 instead of 2. Source : en.wikipedia.org/wiki/Order_of_operation.. :) :) :)
2012-07-25 15:05
#469
dsn | 
India sRik 
bitch plzzzz i get 2 when i do it my way :/
2012-07-25 15:11
then you're doing it wrong or you are a part of the 0.1% that uses "implied multiplication".
2012-07-25 15:22
hmmm...that's strange. w.alpha only does it if there's exactly one variable. the output of 2x/2x is 1, but 2x/2xy is shown as (x^2)y. The full software ("Mathematica") never uses implied multiplication. The output of 2x/2x is x^2. Dunno why they made this "feature" in alpha. Maybe because the average alpha user is too stupid to use brackets in short terms like 2x/(2x)..
2012-07-25 15:20
Even my 15-years-old calculator gets trolled. i.imgur.com/CfPHQ.jpg You can't just write " 2( " and forgot * 288. end of story.
2012-07-25 15:13
no.
2012-07-25 16:48
48/2*(9+3) =/= 48/2(9+3)
2012-07-25 17:12
its the same wtf people ?
2012-07-25 17:20
48/2(9+3) = 48/2*(9+3) = 288 =/= 48/(2(9+3)) = 2 I thought it was 2 in the beginning but the thread made me think a little and this is my conclusion. The answer is 288.
2012-07-25 17:45
yeap now you have right
2012-07-25 18:20
According to my Casio FX-9860 GII from the last year (one of best calculation machines in market) the result is 2. So I'm the best kkkkkk
2012-07-25 23:02
It's 1337, thread closed.
2012-07-25 16:14
+1
2012-07-25 16:48
It wasnt especified correctly. 48 _____ = 2 } 48:[2(9+3)] 2(9+3) or 48 ___ (9+3) = 288 } 48:2(9+3) 2 We can say the answer is 288, but actually the exercise should be more especified.
2012-07-25 16:31
2 : educated pll 288 : illerate studpid ...5 th grade kids
2012-07-25 16:42
Since there is no brackets like (2(9+3))you must multiply this thing to the numerator,not to the denominator: 48 ---*(9+3)=288 2 brainless cunt
2012-07-25 16:54
i.imgur.com/CfPHQ.jpg rly man ...i dont wanna argue with fools and kids.. see the difference between 48/2(9+3) and 48/2*(9+3) dont add a * on your own ..u studpid fuk....there is a huge differcence between the 2 expression
2012-07-25 18:25
img684.imageshack.us/img684/271/2881j.jp.. img802.imageshack.us/img802/2544/288xv.j.. So your calculator argument is annulated. 2*(9+3)=2(9+3) - you can check on your calculator also,freak There is answer "2" only if "2(9+3)" have brackets like this "(2(9+3))" so we must multiply 2 with 12 first instead of dividing 48/2. Now crawl back to your cave,mindraped shithead
2012-07-25 18:35
What? Actualy 288 is by math operation order. (even google tell you it's 288) "Solving for the answer 2 is sometimes a result of doing multiplication before division. Much of the confusion can be blamed on PEMDAS (sometimes known as, “Please Excuse My Dear Aunt Sally”) and other similar mnemonics used to teach order of operations in schools." - Knowyourmeme.com or Implied Multiplication.
2012-07-25 17:24
lok 2 coments up....stupid kid
2012-07-25 18:27
which is false. those statements are the same. There is an implicit multiplication sign with a number next to brackets proof: wolframalpha.com/input/?i=48%2F2*%289%2B.. and wolframalpha.com/input/?i=48%2F2%289%2B3..
2012-07-25 18:36
48/2(9+3) 48/2(12) 48/24 2 _ 48/2(9+3) 48/(18+6) 48/24 2 _ x/y(a+b) x/(ya+yb)
2012-07-25 17:10
48/2(9+3) = 48/2*(9+3) = 288 =/= 48/(2(9+3)) = 2 I thought it was 2 in the beginning but the thread made me think a little and this is my conclusion. The answer is 288.
2012-07-25 17:44
muptiply=divison so you have to do it from left to right (:
2012-07-26 10:50
We'll have to divide 48 by 2(9+3) We'll use the property of multiplication to be distributive over addition: 2(9+3) = 2*9 + 2*3 2(9+3) = 18 + 6 2(9+3) = 24 You can evaluate 2(9+3) as well as: 2(9+3) = 2*12 = 24 Now, we'll divide 48 by 24 and we'll get: 48/24 = 2 Keep in mind that it is impossible to get two real values when we divide two real numbers. The only result of the division is 2.
2012-07-25 17:11
sorry man but that's not the case. It's the fraction 48/2 times the number (9+3). you're adding a set of brackets that isn't there, i.e., turning it into 48/(2*(9+3))
2012-07-25 17:33
"We'll use the property of multiplication to be distributive over addition:" that's where you go wrong. you have to do multiplication and division at the same time as you go left to right. you skipped over the first division, hence producing the wrong answer the wikipedia article explains this well en.wikipedia.org/wiki/Order_of_operation..
2012-07-25 23:25
#680
2014-04-28 04:43
It's 2. Trust me I'm an engineer.
2012-07-25 17:18
why do you use / instead of : ? wolframalpha.com/input/?i=48%3A2%289%2B3..
2012-07-25 18:47
Look at the results of the link you posted. Woflram Alpha uses : not as division but as ratio, while the OP picture is referring to division. Notice how it says 'ratio' right in the results :) You can throw the same style division sign as the op in as well, and again it is 288: wolframalpha.com/input/?i=48%C3%B72%289%..
2012-07-25 18:51
ye it was first time i used wolframalpha
2012-07-25 18:53
Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer. in other words you do brackets first, then move left to right doing both multiplication and division as they come in order, then do addition and subtract as they come in order. you make a common mistake my friend :)
2012-07-25 23:18
Yeah, I was a little confused. Thank you for showing me my mistake. Cheers :)
2012-07-26 10:05
The answer is "2" because it's not even a ":", it's a real "divided by" sign so there's no possibility of misunderstanding here.
2012-07-25 17:24
48/2(9+3) = 48/2*(9+3) = 288 =/= 48/(2(9+3)) = 2 I thought it was 2 in the beginning but the thread made me think a little and this is my conclusion. The answer is 288.
2012-07-25 17:43
=2 , milion %.
2012-07-25 17:41
I think that you are wrong.
2012-07-26 00:00
I know im wrong , but that way teached me. First you solv in bracket than all other.
2012-07-26 05:33
Yeap. You solve the bracket than you solve multiply and divide, but when they are together than you procced from left to right in that case you will get 288 in this task.
2012-07-26 15:50
Yeah now i know that . I mean , i also knew that before but didnt see in first time.
2012-07-26 20:36
69
2012-07-25 17:43
step 1: 9+3 = 12 step 2: 2 * 12 = 24 step 3: 48/24 = 2
2012-07-25 17:49
step 1 good step 2 wrong - multiply = division so we callculate from left to right so 48 / 2 = 24 step 3 24 * 12 = 288
2012-07-25 18:22
i wasnt asking, i was telling. i know im right! 48 = numerator 2(9+3) = denominator
2012-07-26 01:40
not rly 48 = numerator 2 = denominator and then * (9+3)
2012-07-26 02:29
ok. u do it ur way ill do it my way :D knowyourmeme.com/memes/48293
2012-07-26 03:34
dammit. thanks for the link. this topic was killing me. i have been on this shit all day replying. knowing it's a method to troll helps
2012-07-26 01:46
lol u wrote some crazy big explanations back there :D
2012-07-26 03:34
The trick relies on the fact that, besides primary school, you barely see such a symbol for division, far more common is simply writing is as a fraction with numerator and denominator. This leads to misunderstanding.
2012-07-25 18:01
it's 2.. those who are convinced of something else or show that dumb website are dumbasses. Priorities, priorities, you learn that when you're 10.
2012-07-25 18:19
you have pretty weird teacher if he taught you divide < multiply.
2012-07-25 20:08
funny thing is that people thinking that they are right and are ubber wrong
2012-07-25 21:19
Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer. in other words you do brackets first, then move left to right doing both multiplication and division as they come in order, then do addition and subtract as they come in order. you make a common mistake my friend :)
2012-07-25 23:17
"The distributive property of multiplication CLEARLY states that the 2(9+3) is an entire statement and CANNOT be broken up. 2(9+3) follows the distributive property which can be rewritten as (2*9+2*3). Let me repeat the 2 outside of the parenthesis follows the distributive property of multiplication and must be factored and simplified before performing any other operations on it. You do NOT compute this expression from left to right until you use Algebra to simplify the statement 2(9+3). So this can be rewritten as: 48 / (2*9 + 2*3). Which leaves us with. 48 / 24 = 2. Answer = 2. Lastly for those using Google or any other online calculator. These do not understand many theorems or properties so you must explicitly explain what you mean. There is a difference between 48 / 2 * (9+3) and 48 / 2(9+3). The first notation reads 48 / 2 * 1(9+3) while the second reads 48 / (2*9+2*3). Be very careful with your signs."
2012-07-26 01:02
sorry man but you aren't applying it correctly. first of all, the distributive property is solely to say how addition and multiplication interact. it says nothing about what can be split up you are messing up order of operations by performing the multiplicative distrbution first. read en.wikipedia.org/wiki/Order_of_operation.. or literally any source on order of operations. when evaluating an equation, the convention is deal with inside the brackets first, then moving left to right evaluate multiplication and division as it occurs, then again moving left to right evaluate addition and subtraction as it occurs. thus your mistake is in evaluating the multiplication before the division which precedes it to the left. if you put the statement into literally any computer algebra system, it will evaluate it as 288. take your pick (sage, mathematica, maple, scipy library, whatever) and try it. edit: And if you think I'm wrong about the distributive property, please show me a source that corroborates what you say.
2012-07-26 01:24
#680
2014-04-28 04:41
288 I just confirmed form a nerd ass maths pro :|
2012-07-25 18:48
okay guyz. what I do. i wrote this statement in programming language. statement 48/2(9+3) give me error, so i insert 48/2*(9+3) and result was 288. so author forgot about `*`. if he mean 48/2*(9+3) so result 288. if he mean 48/(2(9+3)) so answer is 2. im leaning to result 288, but firstly my answer was 2 )
2012-07-25 18:55
i agree with you. if it would've been 48/ (2(9+3)) then it's 2 but you have 48/2*12, then it goes from left to right so it's 288
2012-07-25 21:06
the answer is 2
2012-07-25 19:21
Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer. in other words you do brackets first, then move left to right doing both multiplication and division as they come in order, then do addition and subtract as they come in order. you make a common mistake my friend :)
2012-07-25 23:17
2012-07-25 22:07
Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer. in other words you do brackets first, then move left to right doing both multiplication and division as they come in order, then do addition and subtract as they come in order. you make a common mistake my friend :)
2012-07-25 23:17
#680
2014-04-28 04:40
48 % 2*(9+3). The ambiguity comes from the sign % because it is a learning symbol for division which is no longer used after early mathematical teachings, and it leaves an ambiguity for defining one valid solution. In not so late mathematics such as algebra, % is replaced for a division line or / in which you need to declare the whole range of the terms implied in the division. Such as (x)/(y(z)) in which / means "x divided by y(z) or (y times z). The meaning of % being just (x)%(y) = x divided by y may not be enough information to define a valid solution, because it all depends on which way you look at the %: If you look at it like this, as most calculators do: (48/2)*(9+3) It will turn into: (24)*(12) = 288 <--- But, looking it accordingly to PEMDAS priority: (48)/(2*(9+3)) Then, 48/(2*12) = 48/24 = 2 <--- More math: For w, x,y, z &#949; IR. If we define the operator % as. (x)%(y) = x/y. it will turn out that. (x)%(y)(z+w) x/y * (z+w). x(z+w) / y. This will give out 288 if we let x=48, y=2, z=9, w=3. But you may also define % by implying all terms after the % are dividing the first part: (x)%(y) = (x)/(y). Then, (x)%(y)(z+w) x/(y(z+w)). This one will give out 2 if we let x=48, y=2, z=9, w=3. The fact is that no sense can be found in trying to find an unique solution to a non-algebraic problem like using a wrong symbol for operations (:
2012-07-25 23:08
you misunderstand pemdas. you are not alone. the mistake that multiplication always is done before division, and likewise addition is always before subtract, is very common but wrong. it's even on the wikipedia page for order of operations Canada uses BEDMAS and the UK uses BIDMAS or BODMAS. In Canada and other English speaking countries, Parentheses may be called Brackets, or symbols of inclusion and Exponentiation may be called either Indices, Powers or Orders, which have the same precedence as Roots or Radicals. Since multiplication and division are of equal precedence, M and D are often interchanged, leading to such acronyms as BODMAS. These mnemonics may be misleading when written this way, especially if the user is not aware that multiplication and division are of equal precedence, as are addition and subtraction. Using any of the above rules in the order "addition first, subtraction afterward" would also give the wrong answer.
2012-07-25 23:15
I didn't know anything about PEMDAS until I read into this problem. I used the name to 'explain' one of the ways to look at this problem. My point is that both are correct solutions of an ambiguous statement, such as using the operator ÷. Do you share my answer or want to add something else?
2012-07-25 23:21
my mistake then :) i agree it is 288 it's good you weren't taught a mnemonic. as you see from this thread, it confuses a lot of people. there's a big section on that confusion on wikipedia if you're curious en.wikipedia.org/wiki/Order_of_operation..
2012-07-25 23:24
My mistake in using PEMDAS just for the reference, what I wanted to imply is that the % makes a division bar which has the whole right part under the bar. These kind of ambiguities are unimportant, as any useful mathematics won't use a symbol % for division, never! From early times people should stop using %, but it's an easy way to teach kids the operation "Divide THIS by THAT".
2012-07-25 23:29
Yeah there are a lot of problems with how math is taught. Don't get me started on that topic :x
2012-07-25 23:30
+1 What I hate is not the stupid people closed to one answer, but the educational system which told them to think so.
2012-07-25 23:37
EDIIIIT! What I think is that neither 2 or 288 are valid, since the problem is not an algebraic one. Ambiguity in solutions is not math. This is more of a language problem, and how math instructors shouldn't use ÷ in the first place.
2012-07-25 23:32
you CANT have 2 dif results,maths are "universal",so the correct answer MUST be the same in every country and with any teacher
2012-07-26 00:07
The ÷ symbol used for division is not of mathematical use, in any advanced level you won't see any ÷, that's why I try to call this a non-mathematical or non-algebraic problem, since it depends of the interpretation of the problem, not on facts. The ÷ symbol is an educational tool used to teach kids to divide numbers, but is not of any theorical use. If they taught math right in every country, or even every school, the answer would be the just one. It's up to you how you interpret the meaning of ÷ the way the 'mathematical problem' appears. But at this moment [48 ÷ 2*(9+3)], the problem is not of mathematical concern.
2012-07-26 09:53
HAHA you are right dude,i study engeneering(1st year) and now that im thinking i have never seen that symbol '%' :pPpP
2012-07-26 19:08
To sum up, The problem itself is irregular because it uses a non-standard algebraic operator such as ÷, which is ambiguous to the fact that it doesn't specify how much of the next term is dividing, which can get fixed by using a proper parethesis. 48 ÷ (2*(9+3)) = 2 48 ÷ 2 * (9+3) = 288 Both are pseudo-correct results of an incorrect statement.
2012-07-25 23:17
Typo: 2 (9 + 3) is the same with 2 * (9 + 3). Proof: 2 * 9 + 2 * 3 = 2 * 12.
2012-07-26 00:04
288
2012-07-26 01:11
lol I'm wondering if the people who said the answer is 2 because of this "/" instead of ":", do they really think that way in the very beginning =)))) More like they got pwned by this elementary stuff then when they found out that there's still a way to change it they switch back and hold on like bytches :( and it's extremely funny when some of you guys try to say that 2(3+9)=2*3+2*9... fkin obvious but irrelevant.
2012-07-26 02:30
#680
2014-04-28 04:39
48:2[9+3)= 48:2x12= 48:24= 2 . Simple.
2012-07-26 02:40
kolejnosc wykonywania dzialan debilu jebany
2012-07-26 10:47
#680
2014-04-28 04:38
Answer is 288 end of story ,, For the stupid ones getting 2 as an answer and still defending it .... Read this - google.co.in/#hl=en&gs_nf=1&cp=4&gs_id=i..
2012-07-26 06:10
#680
2014-04-28 04:38
(math student here) :) people always try to troll other people with basic math .... but a mathematician always tries to express his/herself clearly ... so he uses tools (brackets) so that no confusion exists :) *quote* 48 ÷ (2*(9+3)) = 2 48 ÷ 2 * (9+3) = 288 so the second result (288) is the right result .... you have to calculate the brackets first and then you go from left to right ... because there are further brackets. Math is a beautiful language (that's why i am studying it) ... but you have to express yourself clearly :) so that other people can understand you :)
2012-07-26 10:05
#644
 | 
Latvia GekonsCS 
+1
2012-07-26 12:30
#680
2014-04-28 04:37
dis is very big troll thread . sry . PLS lock thred . sry . sry . no insultes pls . sry .
2012-07-26 15:54
Its 2.
2012-07-26 18:06
Can't belive you're all so stupid 42/2*(9+3) = 42/(2*9+2*3) = 42/(18+6) = 42/24 = 2 kthxbyehf
2012-07-26 20:54
+1
2014-04-28 01:46
#680
2014-04-28 04:37
Let's consider the following relevant example. The quadratic equation. ax^2+bx+c=0. Now, if your values for the a,b and c would be: a=2, b=4, c=2, will result that delta=0, so this equation has a double solution: x1 = x2 = -b / 2*a. So far so good. But, I'm guessing all of you know from your math class, that the result of this solution is -1, and not -4 as the computer himself says. Why? Because: -b -4 -- = -- = -1 2*a 4 So, I say the result for the topic's example is 2.
2014-04-28 01:21
so it has cost you two years to find that out? gg
2014-04-28 01:39
May I ask you why are you so dumb?
2014-04-28 01:42
Go to a fair and predict someones future
2014-04-28 02:55
If you didn't get it until now, I predicted already that you are a dumb.
2014-04-28 04:07
when I type 48/2(9+3) in my calculator, it had the implicit * and then displays 48/2*(9+3). And then, you go. 48/2*(12) 24*(12) 288 it's like when you type 1*2/3*4 ((1*2)/3)*4 and nothing else!
2014-04-28 02:05
That's what I wanted to say. When you resolve a quadratic equation on a PC, and choose those values (2,4,2), the system returns -4 as the result, which is incorrect. The right result is -1. The same applies here. So the calculators can be "wrong".
2014-04-28 04:14
#680
2014-04-28 04:37
#680
2014-04-28 10:32
#680
2014-04-28 19:11
It goes from left in this case so it's 288 :-)
2014-04-28 01:58
#680
2014-04-28 04:36
#680
2014-04-28 10:32
#663
 | 
Argentina atriX^ 
48/2(9+3): Answer is 288. It has to be 48/(2(9+3)) for the result to be 2. Division and multiplication are equals so it has to be done left-to-right. Also what's the point of using distributive property when inside the brackets you have two numbers. Just add them up, no need to distribute. Therefore 48/2*12(left to right)=288.
2014-04-28 02:29
#680
2014-04-28 04:36
#680
2014-04-28 10:31
#680
2014-04-28 04:36
#680
2014-04-28 10:31
so many morons, so little time. you should have immediately turned the 9+3 into 12, making the equation 48 / 2 * 12. its basic order of operations from there people.
2014-04-28 02:41
#680
2014-04-28 04:35
#680
2014-04-28 10:31
:/ LOL
2014-04-28 02:52
10/10 necro.
2014-04-28 03:05
amazed? hahahahah! idiot
2014-04-28 03:39
48÷2(9+3) = 9-44 = NEVER FORGET = HL3 Confirmed.
2014-04-28 03:41
people who think it's 2 keep adding extra brackets
2014-04-28 04:12
#680
2014-04-28 04:35
#680
2014-04-28 10:31
There isnt any fucking trick in this,this is math from elementary. Its always 2. If you devide 48,you cant devide with only 2 ,you must devide it with whole function. S0 48/2*(9+3) is this better looking for you guys?Now you can devide with 2 only and its 24/(9+3) which is again 2.My goosh
2014-04-28 04:22
Seems you failed. If you calculate like that, it's 24*(9+3), and not 24/(9+3).
2014-04-28 04:27
#680
2014-04-28 04:34
#680
2014-04-28 04:35
Guys, please stop this debate, it has already taken place some time ago, and there's no winner, no loser, both answers are correct depending on how you interpret this problem: knowyourmeme.com/memes/48293
2014-04-28 04:34
unfortunately the so-called "distributive property" is erroneously used. a/b*c=a/(b/c) rather than a/b*c=a/(b*c).
2014-04-28 05:08
You need to read again then.
2014-04-28 05:38
288
2014-04-28 04:59
nothing is ambiguous. the division and multiplication follows the left-to-right order. case closed.
2014-04-28 05:04
some guys in here are getting raging boners from this math problem.
2014-04-28 05:46
(48 / 2) * (9+3) = 288 48 / 2 * (9+3) = 288 48 / ( 2 * (9+3))= 2 Try run the equation in Maple Some people should stop talking out their ass:)
2014-04-28 05:47
#714
 | 
Slovakia ten chester 
2014-04-28 05:59
finnaly !
2014-04-28 11:09
#713
 | 
Slovakia ten chester 
2
2014-04-28 05:55
I LIKE TURTLES
2014-04-28 06:11
its 2 u retuts
2014-04-28 06:13
I love to see how much bs you write here :DD Main problem is that written with computer it could be interpreted two different ways and both of them are right because you can't tell how the writer of that calculation meant it in the first place. 1. interpretation 48 --------- = 2 2(9+3) 2. interpretation 48/2 * (9+3) = 288 Both of them are right depending on the interpretation. But as math should always be coherent, the form of this calculation is invalid in the first place and is therefore mathematically incorrect.
2014-04-28 07:07
this 48/(2(9+3)) or (48/2)(9+3) People are just placing their own parentheses out of nowhere^^
2014-04-28 07:10
Sorry but the interpretation you mentioned as the 1. is wrong, you cannot interpret it like that. The 2(9+3) is exactly equal to 2*(9+3), hiding the * is just a way to make it simpler. 48:2(9+3) = 48:2*(9+3) Now, as division and multiplication don't have priority over one another (They are just inverse operations actually) you can do it whatever order you want as long as you understand that :2 = *1/2 48*(1/2)*(9+3) There is no other way
2014-04-28 07:38
#tactical post
2014-04-28 07:18
#725
Poland jMS 
.
2014-04-28 08:29
=288. i always wondered why people from 2nd and 3rd world countries are more educated than people from developed countries like usa, west europe, scandinavia etc...? mby i'm wrong
2014-04-28 08:48
48÷2(9+3)=? 24×(12)=? 24×12=288 10/10 GGWP
2014-04-28 08:56
We indians apply BODMAS rule . Bracket of divisons multiplications additions and substractions
2014-04-28 08:58
Honestly the notation sucks 1. nobody in a science field writes 48:2(9plus3) 2. I for instance interpret it as 48/(2(9plus3)) but I understand why some people see it as (48/2)(9 plus 3). These two are both used in a science field, and when using programs like Matlab, not what OP posted. Nobody uses the : sign, not even with brackets. One should always use brackets to clarify stuff, unless you can put the numbers/variables/constants on two levels. I am double majoring in theoretical physics and math btw in graduate level
2014-04-28 09:07
damn lmao so hard:D
2014-04-28 09:14
It should be written as (48/2)(9+3) or 48/(2(9+3)) Prof Frink just trolling us.
2014-04-28 09:16
with programmer eyes, it's 288
2014-04-28 09:24
It can actually be both 2 and 288
2014-04-28 10:32
are you retarded?
2014-04-28 11:07
he's right..
2014-04-28 12:54
#746
 | 
United Kingdom jMz86 
Couldn't give a flying fuck!
2014-04-28 10:43
This thread proves Germany stronk. Seems like most Germans got this right, others wronk.
2014-04-28 10:58
Punkt vor Strich ofc 288
2014-04-28 11:07
If its written like in the pic then it goes like this 48/2(9+3)= 48/2*12=24*12=288, the problem is that no serious math student/professor would write it like that because that form of writing is more for elementary school with odd rules like this. On a higher level eceryone would write : 1 - instead of 1/2 because it's less confusing. 2 48 48 - = - = 2 2(9+3) 12
2014-04-28 11:11
288 is the right answer... -.-'
2014-04-28 11:12
another wild retard joins the herd!
2014-04-28 11:17
Jesus Christ... It's two... What is confusing here...? The equation in brackets always comes first, and after that it doesn't matter whether you multiply/divide. 48 ______ = 48/24 2(12) You're all just are forgetting that the (9+3) must be multiplied by the 2. It can't be 48/2 * 12 The * 12 has to included with the 2 in the denominator.
2014-04-28 11:34
13
2014-04-28 11:40
since there are no brackets as (48:2)(9+3), answer is 2, unless this typed in special language, so why are you arguing with each others if its not about math but language?
2014-04-28 12:09
2014-04-28 12:31
2. Source: Asian.
2014-04-28 12:56
2 is still right in 2014
2014-04-28 13:28
BODMAS MOTHERFUCKERS, DID YOU EVEN LISTEN AT SCHOOL.
2014-04-28 13:29
U BIDMAS n00b.
2014-04-28 13:31
Same thing meight
2014-04-28 13:33
2 gg easy
2014-04-28 14:12
I think you retards are all missing the point. Nobody who is good at math/science will ever write an expression as ambiguous as this. The question is ill formed. There is literally no correct answer. It's just used to get the drove of morons from facebook to like pages and think they are more clever than everyone else, little do they know.
2014-04-28 14:19
"There is literally no correct answer." There is no correct 'single' answer. There are actually two correct answers.
2014-04-28 14:37
Fuck off mr. pedantic, you know what I meant :P
2014-04-28 18:32
Why would I have thought, "There is literally no correct answer." means there are two answers? I know what you meant, and that is not the same as what I said, so I was just clearing that up :)
2014-04-28 18:57
i.imgur.com/vD96u65.png You don't have to write multiplication sign in front of brackets... I learned this when I was 10.
2014-04-28 14:32
Most people learnt that when they were 10, when you get older you learn algebra though.
2014-04-28 14:35
funny how i went to collage with a math major and i never learned that.
2014-04-28 18:52
2
2014-04-28 14:40
#782
United Kingdom vL- 
lol idiots its 288.. learn some math.. u cant do 2(9+3) before 48*2.. simple math.. ask any kid like 10years old..
2014-04-28 14:45
Haha this explains so much about this community
2014-04-28 18:38
it's just ill written. should be written like: 48 ______ = 2 2(9+3) OR 48 ___ (9+3) = 288 2 who does these with "÷" anyway?
2014-04-28 18:42
this is not math. its more like a code writing habit. in some coding language, it is 2. while in others, it might read as 24*12. so I guess the op of this picture is trying to make a fun of different coders who work with different languages.
2014-04-28 18:56
48/212=0,2264150943396226
2014-04-28 19:04
lol its simple math whats the fucking problem here?
2014-04-28 19:09
#796
 | 
France Kairos1g 
288
2014-04-28 19:16
2
2014-04-28 19:18
#799
suNny | 
Finland m1skaa 
288, if you think otherwise you mustn't have listened in school.
2014-04-28 21:30
It's 2.
2014-04-28 21:43
Yes, its: 48 ______ 2(9+3) and it doesnt matter if I divide 48 by 2 24 _____ 12 Write it how you like still the same answer. Still, proper way to write this equatation is with fraction. There is no "288" and two answers. There´s only one. I believe that people with degree in math are wiser than you.
2014-04-28 22:01
And in the end of they day you learn that you should write it on another form
2014-04-28 22:01
easy
2014-04-28 22:11
the answer is 288, but the picture is misleading. if you had 48/2 x (9+3) it would have been different. Everyone is used to 2(x+y) and you get 2x + 2y... but this is a different case. That's why we got rolled.
2014-04-28 22:30
48 / 2 (9 + 3) We have to start with the brackets first,so we'll have: 48 / 2 * 12 Division and Multiplication has the same priority,so we'll start with the operation that comes first,in this case,the division. 24 * 12 = 288 I thought those "super-educated" europeans would get it.But they answered 2.What a shame.
2014-05-01 20:58
both are correct...
2014-05-01 21:19
7534.
2014-05-01 21:02
#815 (Reply button bugged) Theres no such thing as both correct,we only have one correct answer my friend.
2014-05-01 21:22
Its 2
2014-05-01 21:44
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