48÷2(9+3) = ??

this, and since division comes before multiplication left to right, 288 has to be the answer. you were switching the order of multiplication and division and not following PEMDAS.

SHUN

 
no man, as soon as you have a number, say 'c' and it's beside a bracketed value

example:

c(x+2)

if there is another multiplication or division to be done (something on the same level of operations)

say c(x+2)/4

it is always expanded inside the bracket before the next operation.

it's just nomenclature.

you'd never have

2(4) / 2(8)

and solve it

2x(4/2)x8

2x2x8

you'd always solve it

8 / 16
 
Lets make the 3 equal to x.

9+3 is obviously first, so 48÷2(9+x)

now, solve both equations for x

48/2(9+x)=288
and
48/2(9+x)=2
actually fuck it I can't even do this without knowing the correct order. This problem is fucked, and why rockets blow up when launched
 
1302486744at_first_puppy.jpg
 
Afeld you are correct. I am an engineer, I am good at math. In order to get 2 you must add in the parenthesis like so 48/(2(9+3)). without:
48/2(9+3)48/2*12right to left24*122
 
you gotta be fucking kidding me, division and multiplication are both in the the same step of the order of operation process. You go from left to right. Meaning you divide BEFORE you multiply. Thus getting 288.
 
Adding onto this. There is no equal sign in the original equation, which is necessary for substituting x, at least that was my understanding.
 
your pathetic brah. In order to distribute the 2 you must first evaluate (48/2) then distribute, therefore 288. the division sign links the two they cannot be broken.
48/(2(9+3)) is not equal to 48/2(9+3)
gtfo

NOTE: in my last post i wrote right to left, I meant left to right
 
No it's cool I'm graduating with a BS ME degree in a few weeks (well maybe not after this thread lol). No need for a reason to spell write correctly. thanx brah
 
definitely 288.

order of ops is PEMDAS

first is Parenthesis

second is Exponents

third is Multiplication and Division, left to right

fourth is Addition and Subtraction, left to right
 
you cannot just distribute the 2. if you wish to distribute you have to distribute a 1/2 not just 2. you cannot multiply by 2 because 2 is in the denominator, remember that word, I know its big, denominator 3rd grade. so it is actually a 1/2.
48/2(9+3)48(4.5+1.5)48*6288
 
HA!

okay, I'm switching sides on this one.

after careful consideration, this is the only way is could possibly be done to give one specific answer:

let's bold this up

48÷2(12)

now, separate each individual part into brackets

(48)(÷2)(12)

now, this is the important part: a way of looking at any (÷x) is to multiply by it's inverse, hence (1/x)

so

(48)(1/2)(12)

288!

now, this is absolutely flawless. this is 100% the correct answer
 
Thats what I'm saying. I have taken Cal I II III, differential equation, and linear algebra and got either A's or B's. Now this BS comes around lol.
 
I probably did not explain myself well, its pretty hard without being able to sit down with people and a pencil and paper. I'm sure you can appreciate that.
 
as written it is 288. according to my calculator and my knowledge of order of operations.48 / 2 * 12you go from left to right and get 288
 
the brackets dont just dissapear when you add up whats inside them you have to get rid of them by multiplying them by whats outside the bracket
 
yeah it's fucking stupid anyway. you'd either see a 48 / (all this other shit as the denominator) or you'd keep the consistency and throw in a / and X sign or more brackets to separate shit so it isn't ambiguous. cause it's really just (48/2)x(9+3)..
 
Its 2. No questions. PEMDAs. Parentheses are first so you mulitply 9=3 by 2 wich equals 18=6 wich equals 24. then you divid 48 by 24. its not hard...
 
I kept looking at it like this:

x(y)

z(w)

as in, you'd absolutely expand into brackets first then divide

I mean. what the hell. this is grade 10 shit and I completely blanked.

bring in Calc exam next week
 
you're an idiot..

you solve inside the brackets first, then you have 48/2(12) which is the same as 48/2*12

then you just go left to right. 48/2=24*12=288
 
and guess whats on the outside of the brackets, sport? its not just a 2... its not just a 48.... ITS A 48/2 !!!!!! if you want to break that combo apart it becomes 48 * 1/2. you cannot just break a 48/2 into a 48 and a 2.

sorry everyone I've wasted too many posts on this thread. the answer is 288. I am finished.
 
one last point
all you think its 2 you are actually doing 48/(2(9+3)) which is not equal to 48/2(9+3). plug both expressions exactly as written into wolfram alpha, does not fail.
 
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