n=20-3n

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Solution for n=20-3n equation: 



n=20-3n

We move all terms to the left:

n-(20-3n)=0

We add all the numbers together, and all the variables

n-(-3n+20)=0

We get rid of parentheses

n+3n-20=0

We add all the numbers together, and all the variables

4n-20=0

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

4n=20

n=20/4

n=5

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