math
posted by zavier .
ms.sue answer my questions 9 and 7/10  5 and 3/4

First, what is the common denominator for 7/10 and 3/4?
After you post that answer, I'll help you from there. 
29/20

Yes. 20 is the common denominator.
7/10 = 14/20
3/4 = 15/20
You need to subtract 5 15/20 from 9 14/20.
We need to make the top fraction larger. So we to subtract 1 from the whole number and add 20/20 to the fraction.
9 14/20 = 8 34/20
8 34/20  5 15/20 = 3 19/20