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-3(2-4x)=90
We simplify the equation to the form, which is simple to understand
-3(2-4x)=90
Reorder the terms in parentheses
+(-6+12x)=90
Remove unnecessary parentheses
-6+12x=+90
We move all terms containing x to the left and all other terms to the right.
+12x=+90+6
We simplify left and right side of the equation.
+12x=+96
We divide both sides of the equation by 12 to get x.
x=8
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