72+(-9f)=-18f

Solution for 72+(-9f)=-18f equation:

Simplifying
72 + (-9f) = -18f

Solving
72 + (-9f) = -18f

Solving for variable 'f'.

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

Add '18f' to each side of the equation.
72 + (-9f) + 18f = -18f + 18f

Combine like terms: (-9f) + 18f = 9f
72 + 9f = -18f + 18f

Combine like terms: -18f + 18f = 0
72 + 9f = 0

Add '-72' to each side of the equation.
72 + -72 + 9f = 0 + -72

Combine like terms: 72 + -72 = 0
0 + 9f = 0 + -72
9f = 0 + -72

Combine like terms: 0 + -72 = -72
9f = -72

Divide each side by '9'.
f = -8

Simplifying
f = -8