2a=9a-9

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Solution for 2a=9a-9 equation: 



2a=9a-9

We move all terms to the left:

2a-(9a-9)=0

We get rid of parentheses

2a-9a+9=0

We add all the numbers together, and all the variables

-7a+9=0

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

-7a=-9

a=-9/-7

a=1+2/7

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