3(u+3)=-12

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Solution for 3(u+3)=-12 equation: 


Simplifying
3(u + 3) = -12

Reorder the terms:
3(3 + u) = -12
(3 * 3 + u * 3) = -12
(9 + 3u) = -12

Solving
9 + 3u = -12

Solving for variable 'u'.

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

Add '-9' to each side of the equation.
9 + -9 + 3u = -12 + -9

Combine like terms: 9 + -9 = 0
0 + 3u = -12 + -9
3u = -12 + -9

Combine like terms: -12 + -9 = -21
3u = -21

Divide each side by '3'.
u = -7

Simplifying
u = -7

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