12+12a+4a=-4

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Solution for 12+12a+4a=-4 equation: 



12+12a+4a=-4

We move all terms to the left:

12+12a+4a-(-4)=0

We add all the numbers together, and all the variables

16a+16=0

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

16a=-16

a=-16/16

a=-1

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