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9/3-n=81
We move all terms to the left:
9/3-n-(81)=0
determiningTheFunctionDomain -n-81+9/3=0
We add all the numbers together, and all the variables
-1n-78=0
We move all terms containing n to the left, all other terms to the right
-n=78
n=78/-1
n=-78
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