3a=12-6a=-9

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Solution for 3a=12-6a=-9 equation: 



3a=12-6a=-9

We move all terms to the left:

3a-(12-6a)=0

We add all the numbers together, and all the variables

3a-(-6a+12)=0

We get rid of parentheses

3a+6a-12=0

We add all the numbers together, and all the variables

9a-12=0

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

9a=12

a=12/9

a=1+1/3

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