9u-12=-3(u-8)

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Solution for 9u-12=-3(u-8) equation:


Simplifying
9u + -12 = -3(u + -8)

Reorder the terms:
-12 + 9u = -3(u + -8)

Reorder the terms:
-12 + 9u = -3(-8 + u)
-12 + 9u = (-8 * -3 + u * -3)
-12 + 9u = (24 + -3u)

Solving
-12 + 9u = 24 + -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 + 9u + 3u = 24 + -3u + 3u

Combine like terms: 9u + 3u = 12u
-12 + 12u = 24 + -3u + 3u

Combine like terms: -3u + 3u = 0
-12 + 12u = 24 + 0
-12 + 12u = 24

Add '12' to each side of the equation.
-12 + 12 + 12u = 24 + 12

Combine like terms: -12 + 12 = 0
0 + 12u = 24 + 12
12u = 24 + 12

Combine like terms: 24 + 12 = 36
12u = 36

Divide each side by '12'.
u = 3

Simplifying
u = 3

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