3n+4=84-n

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Solution for 3n+4=84-n equation: 



3n+4=84-n

We move all terms to the left:

3n+4-(84-n)=0

We add all the numbers together, and all the variables

3n-(-1n+84)+4=0

We get rid of parentheses

3n+1n-84+4=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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