12a+6a=-6

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Solution for 12a+6a=-6 equation: 



12a+6a=-6

We move all terms to the left:

12a+6a-(-6)=0

We add all the numbers together, and all the variables

18a+6=0

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

18a=-6

a=-6/18

a=-1/3

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