-(-3x+9)-2X=12

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Solution for -(-3x+9)-2X=12 equation: 



-(-3x+9)-2x=12

We move all terms to the left:

-(-3x+9)-2x-(12)=0

We add all the numbers together, and all the variables

-2x-(-3x+9)-12=0

We get rid of parentheses

-2x+3x-9-12=0

We add all the numbers together, and all the variables

x-21=0

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

x=21

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