72=9x-x

Solution for 72=9x-x equation:

Simplifying
72 = 9x + -1x

Combine like terms: 9x + -1x = 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