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Mathematics 18 Online
OpenStudy (anonymous):

5/12 + 8/12

OpenStudy (konradzuse):

for addition and subtraction you need the same denom. Since that is the case here just think of it as 5+8 =?

OpenStudy (konradzuse):

then after you get that it's answer/12

OpenStudy (konradzuse):

Let me know if you don't understand.

OpenStudy (anonymous):

no is not

OpenStudy (anonymous):

is a multyple choice and it says

OpenStudy (konradzuse):

Okay, post the choices.

OpenStudy (anonymous):

13/24 1 2/3 3 1/3 and 1 1/12

OpenStudy (anonymous):

i know u dont add the denominator

OpenStudy (konradzuse):

yup, so what is (8+5)/12?

OpenStudy (anonymous):

13/12

OpenStudy (konradzuse):

yup, so what happens when you have a larger number on top you take out the amount of the bottom from the top. So for example 5/2 = 2(1/2) You take the number in front and add the num, so it's 2 *2 + 1 = 5 5/2.

OpenStudy (konradzuse):

In this case 12 goes into 13 once, and what are we left with?

OpenStudy (anonymous):

1

OpenStudy (konradzuse):

And what is our answer?

OpenStudy (anonymous):

1 1 12

OpenStudy (konradzuse):

correct. 1 * 12 = 12 + 1 = 13/12

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