-8u=-9-7u

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Solution for -8u=-9-7u equation: 


Simplifying
-8u = -9 + -7u

Solving
-8u = -9 + -7u

Solving for variable 'u'.

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

Add '7u' to each side of the equation.
-8u + 7u = -9 + -7u + 7u

Combine like terms: -8u + 7u = -1u
-1u = -9 + -7u + 7u

Combine like terms: -7u + 7u = 0
-1u = -9 + 0
-1u = -9

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

Simplifying
u = 9

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