108=-9y

Solution for 108=-9y equation:

Simplifying
108 = -9y

Solving
108 = -9y

Solving for variable 'y'.

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

Add '9y' to each side of the equation.
108 + 9y = -9y + 9y

Combine like terms: -9y + 9y = 0
108 + 9y = 0

Add '-108' to each side of the equation.
108 + -108 + 9y = 0 + -108

Combine like terms: 108 + -108 = 0
0 + 9y = 0 + -108
9y = 0 + -108

Combine like terms: 0 + -108 = -108
9y = -108

Divide each side by '9'.
y = -12

Simplifying
y = -12