15u-72=7u

Solution for 15u-72=7u equation:

Simplifying
15u + -72 = 7u

Reorder the terms:
-72 + 15u = 7u

Solving
-72 + 15u = 7u

Solving for variable 'u'.

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

Add '-7u' to each side of the equation.
-72 + 15u + -7u = 7u + -7u

Combine like terms: 15u + -7u = 8u
-72 + 8u = 7u + -7u

Combine like terms: 7u + -7u = 0
-72 + 8u = 0

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

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

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

Divide each side by '8'.
u = 9

Simplifying
u = 9