72=9r

Solution for 72=9r equation:

Simplifying
72 = 9r

Solving
72 = 9r

Solving for variable 'r'.

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

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

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

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

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

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

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

Simplifying
r = 8