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-9-7n=1-2
We move all terms to the left:
-9-7n-(1-2)=0
We add all the numbers together, and all the variables
-7n-9-(-1)=0
We add all the numbers together, and all the variables
-7n-8=0
We move all terms containing n to the left, all other terms to the right
-7n=8
n=8/-7
n=-1+1/7
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