3(u+6)=-3(7u-4)+9u

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Solution for 3(u+6)=-3(7u-4)+9u equation:


Simplifying
3(u + 6) = -3(7u + -4) + 9u

Reorder the terms:
3(6 + u) = -3(7u + -4) + 9u
(6 * 3 + u * 3) = -3(7u + -4) + 9u
(18 + 3u) = -3(7u + -4) + 9u

Reorder the terms:
18 + 3u = -3(-4 + 7u) + 9u
18 + 3u = (-4 * -3 + 7u * -3) + 9u
18 + 3u = (12 + -21u) + 9u

Combine like terms: -21u + 9u = -12u
18 + 3u = 12 + -12u

Solving
18 + 3u = 12 + -12u

Solving for variable 'u'.

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

Add '12u' to each side of the equation.
18 + 3u + 12u = 12 + -12u + 12u

Combine like terms: 3u + 12u = 15u
18 + 15u = 12 + -12u + 12u

Combine like terms: -12u + 12u = 0
18 + 15u = 12 + 0
18 + 15u = 12

Add '-18' to each side of the equation.
18 + -18 + 15u = 12 + -18

Combine like terms: 18 + -18 = 0
0 + 15u = 12 + -18
15u = 12 + -18

Combine like terms: 12 + -18 = -6
15u = -6

Divide each side by '15'.
u = -0.4

Simplifying
u = -0.4

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