3(9-3u)=6

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


Simplifying
3(9 + -3u) = 6
(9 * 3 + -3u * 3) = 6
(27 + -9u) = 6

Solving
27 + -9u = 6

Solving for variable 'u'.

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

Add '-27' to each side of the equation.
27 + -27 + -9u = 6 + -27

Combine like terms: 27 + -27 = 0
0 + -9u = 6 + -27
-9u = 6 + -27

Combine like terms: 6 + -27 = -21
-9u = -21

Divide each side by '-9'.
u = 2.333333333

Simplifying
u = 2.333333333

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