3(-4n-9)=12

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Solution for 3(-4n-9)=12 equation: 



3(-4n-9)=12

We move all terms to the left:

3(-4n-9)-(12)=0

We multiply parentheses

-12n-27-12=0

We add all the numbers together, and all the variables

-12n-39=0

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

-12n=39

n=39/-12

n=-3+1/4

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