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-6(n+3)+20=-4n-4
We move all terms to the left:
-6(n+3)+20-(-4n-4)=0
We multiply parentheses
-6n-(-4n-4)-18+20=0
We get rid of parentheses
-6n+4n+4-18+20=0
We add all the numbers together, and all the variables
-2n+6=0
We move all terms containing n to the left, all other terms to the right
-2n=-6
n=-6/-2
n=+3
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