72-u=7u

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Solution for 72-u=7u equation:


Simplifying
72 + -1u = 7u

Solving
72 + -1u = 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 + -1u + -7u = 7u + -7u

Combine like terms: -1u + -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

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