[3u+12]=3

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Solution for [3u+12]=3 equation: 


Simplifying
[3u + 12] = 3

Reorder the terms:
[12 + 3u] = 3

Remove brackets around [12 + 3u]
12 + 3u = 3

Solving
12 + 3u = 3

Solving for variable 'u'.

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

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

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

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

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

Simplifying
u = -3

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