3x+9=-3(-x-3)

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Solution for 3x+9=-3(-x-3) equation: 



3x+9=-3(-x-3)

We move all terms to the left:

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

We add all the numbers together, and all the variables

3x-(-3(-1x-3))+9=0



We calculate terms in parentheses: -(-3(-1x-3)), so:

-3(-1x-3)

We multiply parentheses

3x+9

Back to the equation:

-(3x+9)



We get rid of parentheses

3x-3x-9+9=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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