9u-40=-7(u+8)

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Solution for 9u-40=-7(u+8) equation:


Simplifying
9u + -40 = -7(u + 8)

Reorder the terms:
-40 + 9u = -7(u + 8)

Reorder the terms:
-40 + 9u = -7(8 + u)
-40 + 9u = (8 * -7 + u * -7)
-40 + 9u = (-56 + -7u)

Solving
-40 + 9u = -56 + -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.
-40 + 9u + 7u = -56 + -7u + 7u

Combine like terms: 9u + 7u = 16u
-40 + 16u = -56 + -7u + 7u

Combine like terms: -7u + 7u = 0
-40 + 16u = -56 + 0
-40 + 16u = -56

Add '40' to each side of the equation.
-40 + 40 + 16u = -56 + 40

Combine like terms: -40 + 40 = 0
0 + 16u = -56 + 40
16u = -56 + 40

Combine like terms: -56 + 40 = -16
16u = -16

Divide each side by '16'.
u = -1

Simplifying
u = -1

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