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-66=-4x+2(6x-9)
We simplify the equation to the form, which is simple to understand
-66=-4x+2(6x-9)
Reorder the terms in parentheses
-66=-4x+(+12x-18)
Remove unnecessary parentheses
-66=-4x+12x-18
We move all terms containing x to the left and all other terms to the right.
+4x-12x=-18+66
We simplify left and right side of the equation.
-8x=+48
We divide both sides of the equation by -8 to get x.
x=-6
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