u+18=3

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Solution for u+18=3 equation: 


Simplifying
u + 18 = 3

Reorder the terms:
18 + u = 3

Solving
18 + u = 3

Solving for variable 'u'.

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

Add '-18' to each side of the equation.
18 + -18 + u = 3 + -18

Combine like terms: 18 + -18 = 0
0 + u = 3 + -18
u = 3 + -18

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

Simplifying
u = -15

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