-9h-6+12h+40=20

Solution for -9h-6+12h+40=20 equation:

Simplifying
-9h + -6 + 12h + 40 = 20

Reorder the terms:
-6 + 40 + -9h + 12h = 20

Combine like terms: -6 + 40 = 34
34 + -9h + 12h = 20

Combine like terms: -9h + 12h = 3h
34 + 3h = 20

Solving
34 + 3h = 20

Solving for variable 'h'.

Move all terms containing h to the left, all other terms to the right.

Add '-34' to each side of the equation.
34 + -34 + 3h = 20 + -34

Combine like terms: 34 + -34 = 0
0 + 3h = 20 + -34
3h = 20 + -34

Combine like terms: 20 + -34 = -14
3h = -14

Divide each side by '3'.
h = -4.666666667

Simplifying
h = -4.666666667