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-10x-20=7(-2x-10)
We simplify the equation to the form, which is simple to understand
-10x-20=7(-2x-10)
Reorder the terms in parentheses
-10x-20=+(-14x-70)
Remove unnecessary parentheses
-10x-20=-14x-70
We move all terms containing x to the left and all other terms to the right.
-10x+14x=-70+20
We simplify left and right side of the equation.
+4x=-50
We divide both sides of the equation by 4 to get x.
x=-12.5
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