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999999999999999999999999999999999999999999999999999999999999999999999999999999999999999x^9999999999999999999=9999999999999
We move all terms to the left:
999999999999999999999999999999999999999999999999999999999999999999999999999999999999999x^9999999999999999999-(9999999999999)=0
We do not support expression: x^9999999999999999999
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