-3x=3-(-9)

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



-3x=3-(-9)

We move all terms to the left:

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

We add all the numbers together, and all the variables

-3x-12=0

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

-3x=12

x=12/-3

x=-4

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