-9-2a=4a+9

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Solution for -9-2a=4a+9 equation: 



-9-2a=4a+9

We move all terms to the left:

-9-2a-(4a+9)=0

We get rid of parentheses

-2a-4a-9-9=0

We add all the numbers together, and all the variables

-6a-18=0

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

-6a=18

a=18/-6

a=-3

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