-9=-u

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Solution for -9=-u equation:


Simplifying
-9 = -1u
Solving
-9 = -1u
Solving for variable 'u'.
Move all terms containing u to the left, all other terms to the right.
Add 'u' to each side of the equation.
-9 + u = -1u + u
Combine like terms: -1u + u = 0
-9 + u = 0
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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