4u-u=9

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Solution for 4u-u=9 equation: 


Simplifying
4u + -1u = 9

Combine like terms: 4u + -1u = 3u
3u = 9

Solving
3u = 9

Solving for variable 'u'.

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

Divide each side by '3'.
u = 3

Simplifying
u = 3

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