-9u=9-10u

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Solution for -9u=9-10u equation: 


Simplifying
-9u = 9 + -10u

Solving
-9u = 9 + -10u

Solving for variable 'u'.

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

Add '10u' to each side of the equation.
-9u + 10u = 9 + -10u + 10u

Combine like terms: -9u + 10u = 1u
1u = 9 + -10u + 10u

Combine like terms: -10u + 10u = 0
1u = 9 + 0
1u = 9

Divide each side by '1'.
u = 9

Simplifying
u = 9

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