-3(6u-7)+9u=7(u+1)

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Solution for -3(6u-7)+9u=7(u+1) equation:


Simplifying
-3(6u + -7) + 9u = 7(u + 1)

Reorder the terms:
-3(-7 + 6u) + 9u = 7(u + 1)
(-7 * -3 + 6u * -3) + 9u = 7(u + 1)
(21 + -18u) + 9u = 7(u + 1)

Combine like terms: -18u + 9u = -9u
21 + -9u = 7(u + 1)

Reorder the terms:
21 + -9u = 7(1 + u)
21 + -9u = (1 * 7 + u * 7)
21 + -9u = (7 + 7u)

Solving
21 + -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.
21 + -9u + -7u = 7 + 7u + -7u

Combine like terms: -9u + -7u = -16u
21 + -16u = 7 + 7u + -7u

Combine like terms: 7u + -7u = 0
21 + -16u = 7 + 0
21 + -16u = 7

Add '-21' to each side of the equation.
21 + -21 + -16u = 7 + -21

Combine like terms: 21 + -21 = 0
0 + -16u = 7 + -21
-16u = 7 + -21

Combine like terms: 7 + -21 = -14
-16u = -14

Divide each side by '-16'.
u = 0.875

Simplifying
u = 0.875

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