u=72-7u

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Solution for u=72-7u equation: 


Simplifying
u = 72 + -7u

Solving
u = 72 + -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.
u + 7u = 72 + -7u + 7u

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

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

Divide each side by '8'.
u = 9

Simplifying
u = 9

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