30a+3=12

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Solution for 30a+3=12 equation: 



30a+3=12

We move all terms to the left:

30a+3-(12)=0

We add all the numbers together, and all the variables

30a-9=0

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

30a=9

a=9/30

a=3/10

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