-3=6(u+3)-3u

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


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

Reorder the terms:
-3 = 6(3 + u) + -3u
-3 = (3 * 6 + u * 6) + -3u
-3 = (18 + 6u) + -3u

Combine like terms: 6u + -3u = 3u
-3 = 18 + 3u

Solving
-3 = 18 + 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.
-3 + -3u = 18 + 3u + -3u

Combine like terms: 3u + -3u = 0
-3 + -3u = 18 + 0
-3 + -3u = 18

Add '3' to each side of the equation.
-3 + 3 + -3u = 18 + 3

Combine like terms: -3 + 3 = 0
0 + -3u = 18 + 3
-3u = 18 + 3

Combine like terms: 18 + 3 = 21
-3u = 21

Divide each side by '-3'.
u = -7

Simplifying
u = -7

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