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-7(x+1)=-7x-7
We move all terms to the left:
-7(x+1)-(-7x-7)=0
We multiply parentheses
-7x-(-7x-7)-7=0
We get rid of parentheses
-7x+7x+7-7=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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