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7y+7=2(y+1)
We move all terms to the left:
7y+7-(2(y+1))=0
We calculate terms in parentheses: -(2(y+1)), so:We get rid of parentheses
2(y+1)
We multiply parentheses
2y+2
Back to the equation:
-(2y+2)
7y-2y-2+7=0
We add all the numbers together, and all the variables
5y+5=0
We move all terms containing y to the left, all other terms to the right
5y=-5
y=-5/5
y=-1
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