3(4n-9)=57

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Solution for 3(4n-9)=57 equation: 



3(4n-9)=57

We move all terms to the left:

3(4n-9)-(57)=0

We multiply parentheses

12n-27-57=0

We add all the numbers together, and all the variables

12n-84=0

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

12n=84

n=84/12

n=7

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