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1273897347309420985097059523792734x^23940839842093849898495845=8453479857487538475835345-83498573984759873498759485
We move all terms to the left:
1273897347309420985097059523792734x^23940839842093849898495845-(8453479857487538475835345-83498573984759873498759485)=0
We do not support expression: x^23940839842093849898495845
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