64=9u-u

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Solution for 64=9u-u equation:


Simplifying
64 = 9u + -1u

Combine like terms: 9u + -1u = 8u
64 = 8u

Solving
64 = 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.
64 + -8u = 8u + -8u

Combine like terms: 8u + -8u = 0
64 + -8u = 0

Add '-64' to each side of the equation.
64 + -64 + -8u = 0 + -64

Combine like terms: 64 + -64 = 0
0 + -8u = 0 + -64
-8u = 0 + -64

Combine like terms: 0 + -64 = -64
-8u = -64

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

Simplifying
u = 8

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