3n+n=20+8

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Solution for 3n+n=20+8 equation: 



3n+n=20+8

We move all terms to the left:

3n+n-(20+8)=0

We add all the numbers together, and all the variables

3n+n-28=0

We add all the numbers together, and all the variables

4n-28=0

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

4n=28

n=28/4

n=7

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