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3n+3*7=3
We move all terms to the left:
3n+3*7-(3)=0
determiningTheFunctionDomain 3n-3+3*7=0
We add all the numbers together, and all the variables
3n+18=0
We move all terms containing n to the left, all other terms to the right
3n=-18
n=-18/3
n=-6
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