-72=9b

Solution for -72=9b equation:

Simplifying
-72 = 9b

Solving
-72 = 9b

Solving for variable 'b'.

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

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

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

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

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

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

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

Simplifying
b = -8