5a-9=3+1a

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Solution for 5a-9=3+1a equation: 



5a-9=3+1a

We move all terms to the left:

5a-9-(3+1a)=0

We add all the numbers together, and all the variables

5a-(a+3)-9=0

We get rid of parentheses

5a-a-3-9=0

We add all the numbers together, and all the variables

4a-12=0

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

4a=12

a=12/4

a=3

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