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22-43=n+20
We move all terms to the left:
22-43-(n+20)=0
We add all the numbers together, and all the variables
-(n+20)-21=0
We get rid of parentheses
-n-20-21=0
We add all the numbers together, and all the variables
-1n-41=0
We move all terms containing n to the left, all other terms to the right
-n=41
n=41/-1
n=-41
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