9^3x=81^x-4

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Solution for 9^3x=81^x-4 equation: 



9^3x=81^x-4

We move all terms to the left:

9^3x-(81^x-4)=0

We get rid of parentheses

9^3x-81^x+4=0

We move all terms containing x to the left, all other terms to the right

9^3x-81^x=-4

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