3(u+4)=-3u+42

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Solution for 3(u+4)=-3u+42 equation:


Simplifying
3(u + 4) = -3u + 42

Reorder the terms:
3(4 + u) = -3u + 42
(4 * 3 + u * 3) = -3u + 42
(12 + 3u) = -3u + 42

Reorder the terms:
12 + 3u = 42 + -3u

Solving
12 + 3u = 42 + -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 + 3u = 42 + -3u + 3u

Combine like terms: 3u + 3u = 6u
12 + 6u = 42 + -3u + 3u

Combine like terms: -3u + 3u = 0
12 + 6u = 42 + 0
12 + 6u = 42

Add '-12' to each side of the equation.
12 + -12 + 6u = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 6u = 42 + -12
6u = 42 + -12

Combine like terms: 42 + -12 = 30
6u = 30

Divide each side by '6'.
u = 5

Simplifying
u = 5

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