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-8n-4=-2+n7-8n
We move all terms to the left:
-8n-4-(-2+n7-8n)=0
We add all the numbers together, and all the variables
-(+n^7-8n-2)-8n-4=0
We get rid of parentheses
-n^7+8n-8n+2-4=0
We do not support enpression: n^7
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