20=2(3n+1)

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Solution for 20=2(3n+1) equation: 



20=2(3n+1)

We move all terms to the left:

20-(2(3n+1))=0



We calculate terms in parentheses: -(2(3n+1)), so:

2(3n+1)

We multiply parentheses

6n+2

Back to the equation:

-(6n+2)



We get rid of parentheses

-6n-2+20=0

We add all the numbers together, and all the variables

-6n+18=0

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

-6n=-18

n=-18/-6

n=+3

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