u+12=31

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Solution for u+12=31 equation: 


Simplifying
u + 12 = 31

Reorder the terms:
12 + u = 31

Solving
12 + u = 31

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 = 31 + -12

Combine like terms: 12 + -12 = 0
0 + u = 31 + -12
u = 31 + -12

Combine like terms: 31 + -12 = 19
u = 19

Simplifying
u = 19

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