12u-3u=45

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Solution for 12u-3u=45 equation: 


Simplifying
12u + -3u = 45

Combine like terms: 12u + -3u = 9u
9u = 45

Solving
9u = 45

Solving for variable 'u'.

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

Divide each side by '9'.
u = 5

Simplifying
u = 5

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