72-9z=-z

Solution for 72-9z=-z equation:

Simplifying
72 + -9z = -1z

Solving
72 + -9z = -1z

Solving for variable 'z'.

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

Add 'z' to each side of the equation.
72 + -9z + z = -1z + z

Combine like terms: -9z + z = -8z
72 + -8z = -1z + z

Combine like terms: -1z + z = 0
72 + -8z = 0

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

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

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

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

Simplifying
z = 9