12+7a=-6

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Solution for 12+7a=-6 equation: 



12+7a=-6

We move all terms to the left:

12+7a-(-6)=0

We add all the numbers together, and all the variables

7a+18=0

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

7a=-18

a=-18/7

a=-2+4/7

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