2a-9=19+9a

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Solution for 2a-9=19+9a equation: 



2a-9=19+9a

We move all terms to the left:

2a-9-(19+9a)=0

We add all the numbers together, and all the variables

2a-(9a+19)-9=0

We get rid of parentheses

2a-9a-19-9=0

We add all the numbers together, and all the variables

-7a-28=0

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

-7a=28

a=28/-7

a=-4

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