-9+2u=u

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Solution for -9+2u=u equation:


Simplifying
-9 + 2u = u

Solving
-9 + 2u = u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
-9 + 2u + -1u = u + -1u

Combine like terms: 2u + -1u = 1u
-9 + 1u = u + -1u

Combine like terms: u + -1u = 0
-9 + 1u = 0

Add '9' to each side of the equation.
-9 + 9 + 1u = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 1u = 0 + 9
1u = 0 + 9

Combine like terms: 0 + 9 = 9
1u = 9

Divide each side by '1'.
u = 9

Simplifying
u = 9

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