3u-3=-15

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Solution for 3u-3=-15 equation: 


Simplifying
3u + -3 = -15

Reorder the terms:
-3 + 3u = -15

Solving
-3 + 3u = -15

Solving for variable 'u'.

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

Add '3' to each side of the equation.
-3 + 3 + 3u = -15 + 3

Combine like terms: -3 + 3 = 0
0 + 3u = -15 + 3
3u = -15 + 3

Combine like terms: -15 + 3 = -12
3u = -12

Divide each side by '3'.
u = -4

Simplifying
u = -4

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