u-9=

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Solution for u-9= equation: 


Simplifying
u + -9 = 0

Reorder the terms:
-9 + u = 0

Solving
-9 + u = 0

Solving for variable 'u'.

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

Add '9' to each side of the equation.
-9 + 9 + u = 0 + 9

Combine like terms: -9 + 9 = 0
0 + u = 0 + 9
u = 0 + 9

Combine like terms: 0 + 9 = 9
u = 9

Simplifying
u = 9

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