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-1n/9=2
We move all terms to the left:
-1n/9-(2)=0
We multiply all the terms by the denominator
-1n-2*9=0
We add all the numbers together, and all the variables
-1n-18=0
We move all terms containing n to the left, all other terms to the right
-n=18
n=18/-1
n=-18
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