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-22=2(-1+n)
We move all terms to the left:
-22-(2(-1+n))=0
We add all the numbers together, and all the variables
-(2(n-1))-22=0
We calculate terms in parentheses: -(2(n-1)), so:We get rid of parentheses
2(n-1)
We multiply parentheses
2n-2
Back to the equation:
-(2n-2)
-2n+2-22=0
We add all the numbers together, and all the variables
-2n-20=0
We move all terms containing n to the left, all other terms to the right
-2n=20
n=20/-2
n=-10
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