-3a-3=9-9a

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Solution for -3a-3=9-9a equation: 



-3a-3=9-9a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-3a+9a-9-3=0

We add all the numbers together, and all the variables

6a-12=0

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

6a=12

a=12/6

a=2

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