-7u+9u=18+18

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Solution for -7u+9u=18+18 equation: 


Simplifying
-7u + 9u = 18 + 18

Combine like terms: -7u + 9u = 2u
2u = 18 + 18

Combine like terms: 18 + 18 = 36
2u = 36

Solving
2u = 36

Solving for variable 'u'.

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

Divide each side by '2'.
u = 18

Simplifying
u = 18

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