Simplify 7-9h+10-4-9h-3

Combine like terms:

7 - 9h + 10 - 4 - 9h - 3 = (-9h - 9h) + (7 + 10 - 4 - 3)

Simplify the terms inside parentheses:
(-9h - 9h) + (7 + 10 - 4 - 3) = -18h + (10)

Simplify further:
-18h + (10) = -18h + 10