48÷2(9+3) = ??

order of operations goes PEMDAS

Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Now I think you guys are right, it goes left to right, so I think in this case you would divide before you multiply.
 
Some phyics forum: http://www.physicsforums.com/showthread.php?t=488334

...48÷2*(9+3) = 48÷2*(12) = 48÷24 = 2

The reason why some people are getting 288 is that they're forgetting that there's an invisible multiply sign in the expression.

Honestly though, if I ever saw this I would apply a facepalm. It's not

good notation and like you're seeing, it's ambiguous without proper use

of parentheses and will confuse people. It's better notation to say

48

---------

(9+3)

BLAH MATHS.























 
i honestly have never heard of pemdas ....so i looked it up, and how the f do you guys get 2 ?
http://www.mathsisfun.com/operation-order-pemdas.html
ok, we can all agree that parentheses go first, and that 2(....) is actually 2 x (...)
so this gives us 48 / 2 x (9+3)still ok?48 / 2 x 12 (parentheses go first)
now we have a division and a multiplication, pemda says:
PParentheses firstEExponents (ie Powers and Square Roots, etc.)MDMultiplication and Division (left-to-right)ASAddition and Subtraction (left-to-right)
Divide and Multiply rank equally (and go left to right).Add and Subtract rank equally (and go left to right)
so if division and multiplication rank equally, we should just work from left to right....
=48/2 x12=24 x12 =288

any of you PEMDAS freaks want to correct me ?
 
buuut, I'd like to see someone shoot down this logic.

If you divide something by 2, it's the same as multiplying by (1/2). dividing can be changed to multiplication by taking the inverse of the number. eg. 5÷4 is the same as 5(1/4)

now, the equation 48÷2(12) can be rewritten with brackets around each individual part without changing anything about it:

(48)(÷2)(12)

now, keeping it like that shows the same problem. is it 48÷2 first? or 2*12 first?

so, just substitute in the inverse of (÷2) so everything is a multiplication. so sub in (1/2)

now you get (48)(1/2)(12)

this is 288.

there is no other way about this. someone try to prove this wrong

13025323351298436752652.jpg

 
After reading this thread I have come to a conclusion.

People saying 288: High school kids

People saying 2: College kids or older kids who do real math and do it in the order that is correct.

No shit the problem comes out to both 2 an 288 depending how you calculate it. No shit the calculator comes out to 288, but if you have taken enough math classes you know that the calculator is not a reliable tool in cases like this.
 
I am a university student, and I say 288. I did say 2 at first, but then proved myself wrong. read a couple posts up. prove it wrong. I dare you
 
yep, this is the hidden logic in the order of operations, that's why multiplications and divisions rank equally, because a division is basically a special form of multiplicationie.
3 / 2 = 3 x (1/2)
same goes for addition and substraction which also rank equallyie.
4 - 18 =4 + (-18)

 
It's 288.

Please let me know what "math class" give you the additional insight to surpass the order of operations.
 
another way of proving it to be 288 which cannot be proven wrong.

48÷2(3+9)

once again, divide everything into it's own set of brackets

(48)(÷2)(3+9)

now, you may choose to expand the 2 into the brackets.

48[(÷2)(3)+(÷2)(9)]

which becomes

48(3/2+9/2)

288!!
 
I am a junior in mechanical engineering at Penn state. I am better at math than you. It's 288 as written. Want It to be2? Must add parentheses like so 48/(2(9+3)). Calculators are not unreliable in this matter, what is unreliable is the input method by the user and their knowledge of order of operations. Thanks for playing
 
how is this thread so long? its 288, not debatable. anyone who says otherwise doesn't remember 6th grade math. left to right motherfuckers, its not a hard concept to grasp, its sorta how we read.

lol at vinnieF trying to prove shit, its a simple equation, no need for proof because there is only one correct way to solve it
 
math is all about proofs. actually, it's entirely proofs. you can't have a math equation and have an answer without proving it.

you've obviously never taken anything above high school math.
 
Yea on my computer the / actually looks like a +. So had to zoom in to finally realize that it was a divide.

But I think it is written incorrectly so its stupid

 
lol at people getting all hyped up about this and saying "the answer is obviously ___ retards". no, its not obvious. and honestly, who gives a fuck cause it was clearly written poorly.

but forreal, the answer is 288.. dumb fucks
 
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