Question

I need help in my adding and/or subtracting fractions

Answer 1

First, you have to make sure that two fractions have the same denominator. he best way to do that is:
For Example:     4          7          8          7
                         ----  +  -----  =  -----  +  -----
                         10        20        20        20

Then, just add or subtract the numerators and you got your answer.

Boom.