8*3^n-1-21=51

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Solution for 8*3^n-1-21=51 equation: 



8*3^n-1-21=51

We move all terms to the left:

8*3^n-1-21-(51)=0

We add all the numbers together, and all the variables

8*3^n-73=0

Wy multiply elements

24n-73=0

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

24n=73

n=73/24

n=3+1/24

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