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12(n-3)+396=12n+3
We move all terms to the left:
12(n-3)+396-(12n+3)=0
We multiply parentheses
12n-(12n+3)-36+396=0
We get rid of parentheses
12n-12n-3-36+396=0
We add all the numbers together, and all the variables
357!=0
There is no solution for this equation
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