3a=7-11-9a

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Solution for 3a=7-11-9a equation: 



3a=7-11-9a

We move all terms to the left:

3a-(7-11-9a)=0

We add all the numbers together, and all the variables

3a-(-9a-4)=0

We get rid of parentheses

3a+9a+4=0

We add all the numbers together, and all the variables

12a+4=0

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

12a=-4

a=-4/12

a=-1/3

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