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213n=251.25n
We move all terms to the left:
213n-(251.25n)=0
We add all the numbers together, and all the variables
213n-(+251.25n)=0
We get rid of parentheses
213n-251.25n=0
We add all the numbers together, and all the variables
-38.25n=0
n=0/-38.25
n=0
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