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