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6n+18=n+7-n
We move all terms to the left:
6n+18-(n+7-n)=0
We add all the numbers together, and all the variables
6n+18-7=0
We add all the numbers together, and all the variables
6n+11=0
We move all terms containing n to the left, all other terms to the right
6n=-11
n=-11/6
n=-1+5/6
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