3(6+x)=39

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Solution for 3(6+x)=39 equation: 


Simplifying
3(6 + x) = 39
(6 * 3 + x * 3) = 39
(18 + 3x) = 39

Solving
18 + 3x = 39

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + 3x = 39 + -18

Combine like terms: 18 + -18 = 0
0 + 3x = 39 + -18
3x = 39 + -18

Combine like terms: 39 + -18 = 21
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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