12-u=7

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Solution for 12-u=7 equation: 


Simplifying
12 + -1u = 7

Solving
12 + -1u = 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 + -1u = 7 + -12

Combine like terms: 12 + -12 = 0
0 + -1u = 7 + -12
-1u = 7 + -12

Combine like terms: 7 + -12 = -5
-1u = -5

Divide each side by '-1'.
u = 5

Simplifying
u = 5

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