-12=3(u-3)-2(3u+3)

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Solution for -12=3(u-3)-2(3u+3) equation:


Simplifying
-12 = 3(u + -3) + -2(3u + 3)

Reorder the terms:
-12 = 3(-3 + u) + -2(3u + 3)
-12 = (-3 * 3 + u * 3) + -2(3u + 3)
-12 = (-9 + 3u) + -2(3u + 3)

Reorder the terms:
-12 = -9 + 3u + -2(3 + 3u)
-12 = -9 + 3u + (3 * -2 + 3u * -2)
-12 = -9 + 3u + (-6 + -6u)

Reorder the terms:
-12 = -9 + -6 + 3u + -6u

Combine like terms: -9 + -6 = -15
-12 = -15 + 3u + -6u

Combine like terms: 3u + -6u = -3u
-12 = -15 + -3u

Solving
-12 = -15 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
-12 + 3u = -15 + -3u + 3u

Combine like terms: -3u + 3u = 0
-12 + 3u = -15 + 0
-12 + 3u = -15

Add '12' to each side of the equation.
-12 + 12 + 3u = -15 + 12

Combine like terms: -12 + 12 = 0
0 + 3u = -15 + 12
3u = -15 + 12

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

Divide each side by '3'.
u = -1

Simplifying
u = -1

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