Answer: h = 16
Explanation:
We will isolate the variable, h, with inverse operations and simplifying to solve for h.
Given:

Multiply both sides of the equation by 6:
➜ Why would we do this? This allows us to work without fractions.
-5h - 4h = -144
Combine like terms:
-9h = -144
Divide both sides of the equation by -9:
h = 16