6-3u=18

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Solution for 6-3u=18 equation: 


Simplifying
6 + -3u = 18

Solving
6 + -3u = 18

Solving for variable 'u'.

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

Add '-6' to each side of the equation.
6 + -6 + -3u = 18 + -6

Combine like terms: 6 + -6 = 0
0 + -3u = 18 + -6
-3u = 18 + -6

Combine like terms: 18 + -6 = 12
-3u = 12

Divide each side by '-3'.
u = -4

Simplifying
u = -4

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