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(x-4)-(x7)=8x
We move all terms to the left:
(x-4)-(x7)-(8x)=0
We add all the numbers together, and all the variables
-1x^7-8x+(x-4)=0
We get rid of parentheses
-1x^7-8x+x-4=0
We do not support expression: x^7
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