12(n+3)-3n=117

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Solution for 12(n+3)-3n=117 equation: 



12(n+3)-3n=117

We move all terms to the left:

12(n+3)-3n-(117)=0

We add all the numbers together, and all the variables

-3n+12(n+3)-117=0

We multiply parentheses

-3n+12n+36-117=0

We add all the numbers together, and all the variables

9n-81=0

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

9n=81

n=81/9

n=9

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