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-5x+7(-2x-7)=-66-2x
We simplify the equation to the form, which is simple to understand
-5x+7(-2x-7)=-66-2x
Reorder the terms in parentheses
-5x+(-14x-49)=-66-2x
Remove unnecessary parentheses
-5x-14x-49=-66-2x
We move all terms containing x to the left and all other terms to the right.
-5x-14x+2x=-66+49
We simplify left and right side of the equation.
-17x=-17
We divide both sides of the equation by -17 to get x.
x=1
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