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#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.
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.
#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.
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.
#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
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.
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.
#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.
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.
#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
www.purplemath.com/modules/orderops.htm