-12-5u=3

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Solution for -12-5u=3 equation: 


Simplifying
-12 + -5u = 3

Solving
-12 + -5u = 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 + -5u = 3 + 12

Combine like terms: -12 + 12 = 0
0 + -5u = 3 + 12
-5u = 3 + 12

Combine like terms: 3 + 12 = 15
-5u = 15

Divide each side by '-5'.
u = -3

Simplifying
u = -3

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