4n-(3+2n)=21

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Solution for 4n-(3+2n)=21 equation: 



4n-(3+2n)=21

We move all terms to the left:

4n-(3+2n)-(21)=0

We add all the numbers together, and all the variables

4n-(2n+3)-21=0

We get rid of parentheses

4n-2n-3-21=0

We add all the numbers together, and all the variables

2n-24=0

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

2n=24

n=24/2

n=12

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