9a=3a+12

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Solution for 9a=3a+12 equation: 



9a=3a+12

We move all terms to the left:

9a-(3a+12)=0

We get rid of parentheses

9a-3a-12=0

We add all the numbers together, and all the variables

6a-12=0

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

6a=12

a=12/6

a=2

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