8=9u-u

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Solution for 8=9u-u equation:


Simplifying
8 = 9u + -1u

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

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

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

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

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

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

Divide each side by '-8'.
u = 1

Simplifying
u = 1

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