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-2(n-2)=45
We move all terms to the left:
-2(n-2)-(45)=0
We multiply parentheses
-2n+4-45=0
We add all the numbers together, and all the variables
-2n-41=0
We move all terms containing n to the left, all other terms to the right
-2n=41
n=41/-2
n=-20+1/2
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