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2x+3-143=x-19+23+x12
We move all terms to the left:
2x+3-143-(x-19+23+x12)=0
We add all the numbers together, and all the variables
-(+x+x^12-19+23)+2x+3-143=0
We add all the numbers together, and all the variables
-(+x+x^12-19+23)+2x-140=0
We get rid of parentheses
-x^12-x+2x+19-23-140=0
We do not support expression: x^12
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