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3-(x+7)=-2(-2x-4)
We simplify the equation to the form, which is simple to understand
3-(x+7)=-2(-2x-4)
Remove unnecessary parentheses
3-1x-7=-2*(-2x-4)
Reorder the terms in parentheses
3-1x-7=+(+4x+8)
Remove unnecessary parentheses
+3-1x-7=+4x+8
We move all terms containing x to the left and all other terms to the right.
-1x-4x=+8-3+7
We simplify left and right side of the equation.
-5x=+12
We divide both sides of the equation by -5 to get x.
x=-2.4
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