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-7(x+1)=7(x+1)
We move all terms to the left:
-7(x+1)-(7(x+1))=0
We multiply parentheses
-7x-(7(x+1))-7=0
We calculate terms in parentheses: -(7(x+1)), so:We get rid of parentheses
7(x+1)
We multiply parentheses
7x+7
Back to the equation:
-(7x+7)
-7x-7x-7-7=0
We add all the numbers together, and all the variables
-14x-14=0
We move all terms containing x to the left, all other terms to the right
-14x=14
x=14/-14
x=-1
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