u-15=-18

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Solution for u-15=-18 equation: 


Simplifying
u + -15 = -18

Reorder the terms:
-15 + u = -18

Solving
-15 + u = -18

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 = -18 + 15

Combine like terms: -15 + 15 = 0
0 + u = -18 + 15
u = -18 + 15

Combine like terms: -18 + 15 = -3
u = -3

Simplifying
u = -3

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