9a=12a-2a

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Solution for 9a=12a-2a equation: 



9a=12a-2a

We move all terms to the left:

9a-(12a-2a)=0

We add all the numbers together, and all the variables

9a-(+10a)=0

We get rid of parentheses

9a-10a=0

We add all the numbers together, and all the variables

-a=0

a=0/-1

a=0

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