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-2(3-6x)=138
We simplify the equation to the form, which is simple to understand
-2(3-6x)=138
Reorder the terms in parentheses
+(-6+12x)=138
Remove unnecessary parentheses
-6+12x=+138
We move all terms containing x to the left and all other terms to the right.
+12x=+138+6
We simplify left and right side of the equation.
+12x=+144
We divide both sides of the equation by 12 to get x.
x=12
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