81^4=3^-y+7

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Solution for 81^4=3^-y+7 equation: 



81^4=3^-y+7

We move all terms to the left:

81^4-(3^-y+7)=0

We add all the numbers together, and all the variables

-(3^-y+7)+43046721=0

We get rid of parentheses

y-7+43046721-3^=0

We add all the numbers together, and all the variables

y=0

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