This is just a place filler

You are adding, and the denominators are the same, so you don't change the denominators. Add the numerators. Combine like terms.
-g + 6 + 2g - 9
2g - g = g
6 - 9 = -3
g - 3 is the numerator
(g - 3)/(h² + 1) is your full answer
hope this helps