u+15=0

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Solution for u+15=0 equation: 


Simplifying
u + 15 = 0

Reorder the terms:
15 + u = 0

Solving
15 + u = 0

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 + u = 0 + -15

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

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

Simplifying
u = -15

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