56=9u-u

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Solution for 56=9u-u equation:


Simplifying
56 = 9u + -1u

Combine like terms: 9u + -1u = 8u
56 = 8u

Solving
56 = 8u

Solving for variable 'u'.

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

Add '-8u' to each side of the equation.
56 + -8u = 8u + -8u

Combine like terms: 8u + -8u = 0
56 + -8u = 0

Add '-56' to each side of the equation.
56 + -56 + -8u = 0 + -56

Combine like terms: 56 + -56 = 0
0 + -8u = 0 + -56
-8u = 0 + -56

Combine like terms: 0 + -56 = -56
-8u = -56

Divide each side by '-8'.
u = 7

Simplifying
u = 7

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