-2u+9=-u

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Solution for -2u+9=-u equation:


Simplifying
-2u + 9 = -1u

Reorder the terms:
9 + -2u = -1u

Solving
9 + -2u = -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 + -2u + u = -1u + u

Combine like terms: -2u + u = -1u
9 + -1u = -1u + u

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

Add '-9' to each side of the equation.
9 + -9 + -1u = 0 + -9

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

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

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

Simplifying
u = 9

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