n=80-4n

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Solution for n=80-4n equation: 



n=80-4n

We move all terms to the left:

n-(80-4n)=0

We add all the numbers together, and all the variables

n-(-4n+80)=0

We get rid of parentheses

n+4n-80=0

We add all the numbers together, and all the variables

5n-80=0

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

5n=80

n=80/5

n=16

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