1+4n=81

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Solution for 1+4n=81 equation: 



1+4n=81

We move all terms to the left:

1+4n-(81)=0

We add all the numbers together, and all the variables

4n-80=0

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

4n=80

n=80/4

n=20

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