1: 5/8 - (-2/8)

2: -9/10 -2/5
3: 6 3/5 - (-2 1/5)

6 answers

Before you can solve these you need to find the common denominator for the two numbers.
oh ok thx
Im strugling may you please help Ms.Sue me find the common denominator for the two numbers?
Common denominator

1: 5/8 - (-2/8)
2: -9/10 -2/5 10
3: 6 3/5 - (-2 1/5)
??????????

im not understanding how to find the common denominator
I 'm sorry, but these are the these already have common denominator.

So add just like a whole numbers.

5/8 - (-2/8) = 5/8 + 2/8 = 7/8

Do the others the same way.