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81^(-2)*729^(1-x)=9^(2x)
We move all terms to the left:
81^(-2)*729^(1-x)-(9^(2x))=0
determiningTheFunctionDomain 81^(-2)*729^(1-x)-9^2x=0
We add all the numbers together, and all the variables
81^(-2)*729^(-1x+1)-9^2x=0
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