-72=x-9x

Solution for -72=x-9x equation:

Simplifying
-72 = x + -9x

Combine like terms: x + -9x = -8x
-72 = -8x

Solving
-72 = -8x

Solving for variable 'x'.

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

Add '8x' to each side of the equation.
-72 + 8x = -8x + 8x

Combine like terms: -8x + 8x = 0
-72 + 8x = 0

Add '72' to each side of the equation.
-72 + 72 + 8x = 0 + 72

Combine like terms: -72 + 72 = 0
0 + 8x = 0 + 72
8x = 0 + 72

Combine like terms: 0 + 72 = 72
8x = 72

Divide each side by '8'.
x = 9

Simplifying
x = 9