6u-12=3(u-7)

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Solution for 6u-12=3(u-7) equation:


Simplifying
6u + -12 = 3(u + -7)

Reorder the terms:
-12 + 6u = 3(u + -7)

Reorder the terms:
-12 + 6u = 3(-7 + u)
-12 + 6u = (-7 * 3 + u * 3)
-12 + 6u = (-21 + 3u)

Solving
-12 + 6u = -21 + 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 + 6u + -3u = -21 + 3u + -3u

Combine like terms: 6u + -3u = 3u
-12 + 3u = -21 + 3u + -3u

Combine like terms: 3u + -3u = 0
-12 + 3u = -21 + 0
-12 + 3u = -21

Add '12' to each side of the equation.
-12 + 12 + 3u = -21 + 12

Combine like terms: -12 + 12 = 0
0 + 3u = -21 + 12
3u = -21 + 12

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

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

Simplifying
u = -3

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