3(4+6x)=138

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Solution for 3(4+6x)=138 equation: 


Simplifying
3(4 + 6x) = 138
(4 * 3 + 6x * 3) = 138
(12 + 18x) = 138

Solving
12 + 18x = 138

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 18x = 138 + -12

Combine like terms: 12 + -12 = 0
0 + 18x = 138 + -12
18x = 138 + -12

Combine like terms: 138 + -12 = 126
18x = 126

Divide each side by '18'.
x = 7

Simplifying
x = 7

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