-9=-x-(x-3)

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



-9=-x-(x-3)

We move all terms to the left:

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



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

-x-(x-3)

We add all the numbers together, and all the variables

-1x-(x-3)

We get rid of parentheses

-1x-x+3

We add all the numbers together, and all the variables

-2x+3

Back to the equation:

-(-2x+3)



We get rid of parentheses

2x-3-9=0

We add all the numbers together, and all the variables

2x-12=0

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

2x=12

x=12/2

x=6

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