2n+3(1+2n)=12.

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Solution for 2n+3(1+2n)=12. equation: 



2n+3(1+2n)=12.

We move all terms to the left:

2n+3(1+2n)-(12.)=0

We add all the numbers together, and all the variables

2n+3(2n+1)-12=0

We multiply parentheses

2n+6n+3-12=0

We add all the numbers together, and all the variables

8n-9=0

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

8n=9

n=9/8

n=1+1/8

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