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

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



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

We move all terms to the left:

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



We calculate terms in parentheses: -(-3x-(x-9)), so:

-3x-(x-9)

We get rid of parentheses

-3x-x+9

We add all the numbers together, and all the variables

-4x+9

Back to the equation:

-(-4x+9)



We get rid of parentheses

4x-9-3=0

We add all the numbers together, and all the variables

4x-12=0

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

4x=12

x=12/4

x=3

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