3a-9=13-9a

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Solution for 3a-9=13-9a equation: 



3a-9=13-9a

We move all terms to the left:

3a-9-(13-9a)=0

We add all the numbers together, and all the variables

3a-(-9a+13)-9=0

We get rid of parentheses

3a+9a-13-9=0

We add all the numbers together, and all the variables

12a-22=0

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

12a=22

a=22/12

a=1+5/6

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