(3x-9)-x=3

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



(3x-9)-x=3

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1x+(3x-9)-3=0

We get rid of parentheses

-1x+3x-9-3=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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