2(n+3)+n=12

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Solution for 2(n+3)+n=12 equation: 



2(n+3)+n=12

We move all terms to the left:

2(n+3)+n-(12)=0

We add all the numbers together, and all the variables

n+2(n+3)-12=0

We multiply parentheses

n+2n+6-12=0

We add all the numbers together, and all the variables

3n-6=0

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

3n=6

n=6/3

n=2

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