Question 657721
10 inches is the total page and you lose 1/2 inch on top and 3/4 inches on the bottom. Therefore:

10 - 1/2 - 3/4

You need a common denominator:
40/4 - 2/4 - 3/4
40/4 - 5/4 
35/4 inches or 8 3/4 inches