9u-12=-3(u-4)

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Solution for 9u-12=-3(u-4) equation:


Simplifying
9u + -12 = -3(u + -4)

Reorder the terms:
-12 + 9u = -3(u + -4)

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

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

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

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

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

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

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

Divide each side by '12'.
u = 2

Simplifying
u = 2

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