Respuesta :

3/4 + 5/8 = 9 3/8.

2 1/2 = 9 3/8 = a negitive number

If you need to know the negative number, comment.
Your answer will be 1.125. You first do what is in the parenthesis. 3/4+5/8=1.375

Then 2 1/2- 1.375= 1.125 

There is your answer ^^