u-(-12)=7

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Solution for u-(-12)=7 equation: 


Simplifying
u + -1(-12) = 7

Multiply -1 * -12
u + 12 = 7

Reorder the terms:
12 + u = 7

Solving
12 + u = 7

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 + u = 7 + -12

Combine like terms: 12 + -12 = 0
0 + u = 7 + -12
u = 7 + -12

Combine like terms: 7 + -12 = -5
u = -5

Simplifying
u = -5

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