3(5+n)=2n+21

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Solution for 3(5+n)=2n+21 equation: 



3(5+n)=2n+21

We move all terms to the left:

3(5+n)-(2n+21)=0

We add all the numbers together, and all the variables

3(n+5)-(2n+21)=0

We multiply parentheses

3n-(2n+21)+15=0

We get rid of parentheses

3n-2n-21+15=0

We add all the numbers together, and all the variables

n-6=0

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

n=6

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