9u+3=7(u-1)

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Solution for 9u+3=7(u-1) equation:


Simplifying
9u + 3 = 7(u + -1)

Reorder the terms:
3 + 9u = 7(u + -1)

Reorder the terms:
3 + 9u = 7(-1 + u)
3 + 9u = (-1 * 7 + u * 7)
3 + 9u = (-7 + 7u)

Solving
3 + 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.
3 + 9u + -7u = -7 + 7u + -7u

Combine like terms: 9u + -7u = 2u
3 + 2u = -7 + 7u + -7u

Combine like terms: 7u + -7u = 0
3 + 2u = -7 + 0
3 + 2u = -7

Add '-3' to each side of the equation.
3 + -3 + 2u = -7 + -3

Combine like terms: 3 + -3 = 0
0 + 2u = -7 + -3
2u = -7 + -3

Combine like terms: -7 + -3 = -10
2u = -10

Divide each side by '2'.
u = -5

Simplifying
u = -5

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