12(n+9)=-108

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Solution for 12(n+9)=-108 equation: 



12(n+9)=-108

We move all terms to the left:

12(n+9)-(-108)=0

We add all the numbers together, and all the variables

12(n+9)+108=0

We multiply parentheses

12n+108+108=0

We add all the numbers together, and all the variables

12n+216=0

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

12n=-216

n=-216/12

n=-18

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