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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-3(-1x-3)-12=0

We multiply parentheses

3x+9-12=0

We add all the numbers together, and all the variables

3x-3=0

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

3x=3

x=3/3

x=1

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