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

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



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

We move all terms to the left:

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



We calculate terms in parentheses: -(2(x-3)), so:

2(x-3)

We multiply parentheses

2x-6

Back to the equation:

-(2x-6)



We get rid of parentheses

x-2x+6-9=0

We add all the numbers together, and all the variables

-1x-3=0

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

-x=3

x=3/-1

x=-3

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