12n+3=-9

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Solution for 12n+3=-9 equation: 



12n+3=-9

We move all terms to the left:

12n+3-(-9)=0

We add all the numbers together, and all the variables

12n+12=0

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

12n=-12

n=-12/12

n=-1

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