2a-9=13-9a

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Solution for 2a-9=13-9a equation: 



2a-9=13-9a

We move all terms to the left:

2a-9-(13-9a)=0

We add all the numbers together, and all the variables

2a-(-9a+13)-9=0

We get rid of parentheses

2a+9a-13-9=0

We add all the numbers together, and all the variables

11a-22=0

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

11a=22

a=22/11

a=2

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