12a+3=39

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Solution for 12a+3=39 equation: 



12a+3=39

We move all terms to the left:

12a+3-(39)=0

We add all the numbers together, and all the variables

12a-36=0

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

12a=36

a=36/12

a=3

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