12-5a=9a+6

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Solution for 12-5a=9a+6 equation: 



12-5a=9a+6

We move all terms to the left:

12-5a-(9a+6)=0

We get rid of parentheses

-5a-9a-6+12=0

We add all the numbers together, and all the variables

-14a+6=0

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

-14a=-6

a=-6/-14

a=3/7

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