6n+21=3(4n-3)

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Solution for 6n+21=3(4n-3) equation: 



6n+21=3(4n-3)

We move all terms to the left:

6n+21-(3(4n-3))=0



We calculate terms in parentheses: -(3(4n-3)), so:

3(4n-3)

We multiply parentheses

12n-9

Back to the equation:

-(12n-9)



We get rid of parentheses

6n-12n+9+21=0

We add all the numbers together, and all the variables

-6n+30=0

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

-6n=-30

n=-30/-6

n=+5

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