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User avatar #4 - clechyl (10/12/2013) [-]
48÷2(9+3)=?
#75 to #4 - anonymous (10/12/2013) [-]
Are you all actually arguing? If you read it as (48/2)*(9+3) you get 288, if you read it as 48/(2(9+3)) you get 2. Its because we its not written in an ideal way i.e.

48 48
--------------------- or -------- *(9+3)
2(9+3) 2



TLDR anyone who is arguing is a dumbass, everyone whos getting different answers is reading it differently.
#77 to #75 - anonymous (10/12/2013) [-]
damn that got messed up
48
--------
2(9+3)

or

48
---- * (9+3)
2
#72 to #4 - alexanderh (10/12/2013) [-]
Jesus christ, people are bad at math. Here's the way to solve it, according to everything I've ever been taught at any level during my school years. Here's method one:
48/2(9+3)=48/(18+6)=48/24=2
And here's method two:
48/2(9+3)=48/2(12)=48/24=2

You guys are removing the brackets too early, you need to solve the equation inside the brackets before you can remove them.
Here's a way to explain it, using words and logic:
The equation is 48 divided by double what's inside the brackets. It's not "48 divided by two, multiplied by the brackets". The brackets can be substitued with X, like this:

48/2x
x=(9+3)=12

WHen searching, it appears that this is a commonly known "unsolvable" math problem. I'll talk to my math teacher about it when I get the chance.
User avatar #83 to #72 - Iseewhatudidthar (10/13/2013) [-]
you did it wrong

you are were right up unto the point where you multiplied the 2 by the brackets

since you added the values within the brackets you essentially removed them from the equation leaving

48/2*12

Since multiplying and dividing come first in the order of operation and there is no sign of addition or subtraction you just needed to go from left to right so

48/2 = 24

24*12 = 288

so the answer is 288
#93 to #83 - alexanderh (10/13/2013) [-]
That's the thing, a lot of people think you can just remove the brackets when you've added the stuff inside them. But you can't, since you're multiplying the 2 with the brackets, making the equation 48/(2(9+3))

The other way to solve it correctly is to follow PEMDAS. That would make it 48/2*12. Since you do multiplication before division, implied brackets make the equation 48/(2*12).
I really don't see how people get the wrong answer to this pretty simple equation.

And the reason Google and other calculators get it wrong is because they don't have PEMDAS coded into them. It appears that Texas Instruments do, which is why they're not wrong.
#61 to #4 - anonymous (10/12/2013) [-]
**anonymous rolls 922**
#41 to #4 - thebiggartner (10/12/2013) [-]
yall need to get rid of the brackets! 48/2(9+3) = 48/(18+6) = 48/24 = 2
User avatar #46 to #41 - azumeow (10/12/2013) [-]
Posted 20+ minutes after an image of a calculator showing a different answer to this exact problem.

Stay classy, funnyjunk.
User avatar #71 to #60 - achimp (10/12/2013) [-]
End times! Illuminati!
User avatar #45 to #35 - azumeow (10/12/2013) [-]
And there we have it.
0
#30 to #4 - megazoidubertron **User deleted account** has deleted their comment [-]
#27 to #4 - chrislee (10/12/2013) [-]
To everyone who keeps saying it's 288, the answer is 2.

Please refer to this Order of Operations:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
(for easy remembering think of "Please Excuse My Dear Aunt Sally")

So, referring to that you would do 9+3 first (12)
Then you would multiply 12 by the 2 because it is next in the operation (24)
Afterwards you would divide 48 by 24 because, once again, we are following out Order of Operations so it would come out to be a total of 2.

Have a good day.
#88 to #85 - chrislee (10/13/2013) [-]
Read down the comments before you post.
User avatar #89 to #88 - Iseewhatudidthar (10/13/2013) [-]
Already did, I just think that I explain it better
#90 to #89 - chrislee (10/13/2013) [-]
The post is dead, it doesn't need to be explained anymore.

Why continuously answer something that has already been answered?
User avatar #91 to #90 - Iseewhatudidthar (10/13/2013) [-]
To explain it
#92 to #91 - chrislee (10/13/2013) [-]
It has already been explained multiple times. You do not need to go through the comments linking your own just to repeat what others have already said.
User avatar #79 to #27 - hydraetis (10/12/2013) [-]
Except the 2 is not inside of the ******* parenthesis.
#80 to #79 - chrislee (10/12/2013) [-]
Read what I wrote before commenting.
User avatar #81 to #80 - hydraetis (10/12/2013) [-]
Why are you doing your math from right to left?

48 / 2 (9 + 3)
^- OUTSIDE OF THE BRACKETS = NOT INCLUDED IN FIRST STEP

48 / 2 (12)
48 / 2 * 12
24 * 12
#82 to #81 - chrislee (10/12/2013) [-]
Read what I wrote before commenting.
User avatar #37 to #27 - hieronymous (10/12/2013) [-]
multiplication and division go from left to right
youd do 48/2 first
User avatar #33 to #27 - puremadmentalged (10/12/2013) [-]
The way I was taught in high school was BIDMAS
Brackets
Indices
Division
Multiplication
Addition
Subtraction
User avatar #29 to #27 - lordbyronxiv (10/12/2013) [-]
actually it's:

Parenthesis
Exponents
Multiplication / Division (whichever comes first from left to right)
Addition / Subtraction (whichever comes first from left to right)
User avatar #32 to #29 - maffi ONLINE (10/12/2013) [-]
This
#31 to #29 - chrislee (10/12/2013) [-]
That is the way I was taught in high school and that is the way I will stick with.
User avatar #34 to #31 - lordbyronxiv (10/12/2013) [-]
"... (but multiplication and division are at the same rank), and these two outrank addition and subtraction (which are together on the bottom rank). When you have a bunch of operations of the same rank, you just operate from left to right. For instance, 15 ÷ 3 × 4 is not 15 ÷ 12, but is rather 5 × 4, because, going from left to right, you get to the division first."

www.purplemath.com/modules/orderops.htm
#36 to #34 - chrislee (10/12/2013) [-]
Very well, you have proven your point and sited correctly.
I will accept any negative thumbs and call my algebra teacher to tell her she's wrong.
User avatar #38 to #36 - lordbyronxiv (10/12/2013) [-]
well it's really easy for teachers to say things a certain way that leaves them open for misinterpretation.

this happens pretty often with pemdas i'd say!
#20 to #4 - anonymous (10/12/2013) [-]
Why are you asking us for help with a middle school math problem? Or are you implying that this problem could have multiple answers?
User avatar #14 to #4 - shadowm (10/12/2013) [-]
Okay first the brackets, yes, which would make the equation 48/2x12, the 2 would be done after as it's not inside the bracket. Therefore the answer is not 2 but 264
User avatar #86 to #14 - Iseewhatudidthar (10/13/2013) [-]
close, it's 288
#25 to #14 - anonymous (10/12/2013) [-]
Thats wrong though.
User avatar #39 to #25 - shadowm (10/12/2013) [-]
Yes I know, see below, I multiplied by 11 for some reason
#16 to #14 - lerriot (10/12/2013) [-]
288*
User avatar #17 to #16 - shadowm (10/12/2013) [-]
Yeah for some reason I multiplied by 11... -.-
#18 to #17 - lerriot (10/12/2013) [-]
yea, even though it was really easy i used a calculator
User avatar #10 to #4 - guyfunnyjunk (10/12/2013) [-]
bidmas
User avatar #9 to #4 - ilovehitler (10/12/2013) [-]
I... I don't see what this has to do with anything...
User avatar #6 to #4 - trolololing ONLINE (10/12/2013) [-]
Brackets first - 9+3 = 12
Work out the whole of the bracket - 2 x 12 = 24
48 / 24 = 2
User avatar #19 to #6 - jickya (10/12/2013) [-]
actually its 288
#15 to #6 - lerriot (10/12/2013) [-]
Actually we do brackets then multiplication/division from left to right

So it would be - 48/2(9+3)

Brackets first - 48/2*12
Then from left to right we go division - 24*12
And lastly the multiplication 288

At least this is how they taught it in Slovakia.
#24 to #15 - anonymous (10/12/2013) [-]
=48/2(9+3)
=48/2(12)
=48/24
=2
You still multiply the 2 by what is in the parenthesis.
#28 to #24 - lerriot (10/12/2013) [-]
not really , because the equations looks like 48 / 2 * (9 + 3)

brackets first, then / then * from left to right after brackets
#44 to #28 - sasalamenceable (10/12/2013) [-]
nope
#52 to #44 - lerriot (10/12/2013) [-]
Just google for PEMDAS, which is the more common system, you can also google from BIDMAS which says division is first which would still prove my result correct
User avatar #5 to #4 - kiwimidget (10/12/2013) [-]
2
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