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

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



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

We move all terms to the left:

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

We multiply parentheses

9n-(3n-21)-3=0

We get rid of parentheses

9n-3n+21-3=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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