2(3n-1)=21

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Solution for 2(3n-1)=21 equation: 



2(3n-1)=21

We move all terms to the left:

2(3n-1)-(21)=0

We multiply parentheses

6n-2-21=0

We add all the numbers together, and all the variables

6n-23=0

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

6n=23

n=23/6

n=3+5/6

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