3(u+4)=9u-6

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


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

Reorder the terms:
3(4 + u) = 9u + -6
(4 * 3 + u * 3) = 9u + -6
(12 + 3u) = 9u + -6

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

Solving
12 + 3u = -6 + 9u

Solving for variable 'u'.

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

Add '-9u' to each side of the equation.
12 + 3u + -9u = -6 + 9u + -9u

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

Combine like terms: 9u + -9u = 0
12 + -6u = -6 + 0
12 + -6u = -6

Add '-12' to each side of the equation.
12 + -12 + -6u = -6 + -12

Combine like terms: 12 + -12 = 0
0 + -6u = -6 + -12
-6u = -6 + -12

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

Divide each side by '-6'.
u = 3

Simplifying
u = 3

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