-9(u-1)=-7u-7

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Solution for -9(u-1)=-7u-7 equation:


Simplifying
-9(u + -1) = -7u + -7

Reorder the terms:
-9(-1 + u) = -7u + -7
(-1 * -9 + u * -9) = -7u + -7
(9 + -9u) = -7u + -7

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

Solving
9 + -9u = -7 + -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.
9 + -9u + 7u = -7 + -7u + 7u

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

Combine like terms: -7u + 7u = 0
9 + -2u = -7 + 0
9 + -2u = -7

Add '-9' to each side of the equation.
9 + -9 + -2u = -7 + -9

Combine like terms: 9 + -9 = 0
0 + -2u = -7 + -9
-2u = -7 + -9

Combine like terms: -7 + -9 = -16
-2u = -16

Divide each side by '-2'.
u = 8

Simplifying
u = 8

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