15-3u=3

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Solution for 15-3u=3 equation: 


Simplifying
15 + -3u = 3

Solving
15 + -3u = 3

Solving for variable 'u'.

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

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

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

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

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

Simplifying
u = 4

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