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X15+20=X6+137
We move all terms to the left:
X15+20-(X6+137)=0
We add all the numbers together, and all the variables
-(+X^6+137)+X15+20=0
We add all the numbers together, and all the variables
X^15-(+X^6+137)+20=0
We get rid of parentheses
X^15-X^6-137+20=0
We do not support eXpression: X^15
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