-3-12a=-9

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Solution for -3-12a=-9 equation: 



-3-12a=-9

We move all terms to the left:

-3-12a-(-9)=0

We add all the numbers together, and all the variables

-12a+6=0

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

-12a=-6

a=-6/-12

a=1/2

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