80=3^n-1

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Solution for 80=3^n-1 equation: 



80=3^n-1

We move all terms to the left:

80-(3^n-1)=0

We get rid of parentheses

-3^n+1+80=0

We add all the numbers together, and all the variables

-3^n+81=0

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

-3^n=-81

n=-81/1

n=-81

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