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54=39n+9
We move all terms to the left:
54-(39n+9)=0
We get rid of parentheses
-39n-9+54=0
We add all the numbers together, and all the variables
-39n+45=0
We move all terms containing n to the left, all other terms to the right
-39n=-45
n=-45/-39
n=1+2/13
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