9u-7-8u=-2

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Solution for 9u-7-8u=-2 equation: 


Simplifying
9u + -7 + -8u = -2

Reorder the terms:
-7 + 9u + -8u = -2

Combine like terms: 9u + -8u = 1u
-7 + 1u = -2

Solving
-7 + 1u = -2

Solving for variable 'u'.

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

Add '7' to each side of the equation.
-7 + 7 + 1u = -2 + 7

Combine like terms: -7 + 7 = 0
0 + 1u = -2 + 7
1u = -2 + 7

Combine like terms: -2 + 7 = 5
1u = 5

Divide each side by '1'.
u = 5

Simplifying
u = 5

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