27^x=81^x-4

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Solution for 27^x=81^x-4 equation: 



27^x=81^x-4

We move all terms to the left:

27^x-(81^x-4)=0

We get rid of parentheses

27^x-81^x+4=0

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

27^x-81^x=-4

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