9=v+u

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Solution for 9=v+u equation: 


Simplifying
9 = v + u

Reorder the terms:
9 = u + v

Solving
9 = u + v

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
9 + -1u = u + -1u + v

Combine like terms: u + -1u = 0
9 + -1u = 0 + v
9 + -1u = v

Add '-9' to each side of the equation.
9 + -9 + -1u = -9 + v

Combine like terms: 9 + -9 = 0
0 + -1u = -9 + v
-1u = -9 + v

Divide each side by '-1'.
u = 9 + -1v

Simplifying
u = 9 + -1v

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