3n=20-2n

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Solution for 3n=20-2n equation: 



3n=20-2n

We move all terms to the left:

3n-(20-2n)=0

We add all the numbers together, and all the variables

3n-(-2n+20)=0

We get rid of parentheses

3n+2n-20=0

We add all the numbers together, and all the variables

5n-20=0

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

5n=20

n=20/5

n=4

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