If I have

|3x-9|=|3-3x|

I do not see how the solution can be = 2

I would think the solution would be = {2,6}

Can someone explain if I am correct or if the given solution was correct, and why? Thanks

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- Dec 4th 2009, 03:40 PMleoslickAbsolute value equation
If I have

|3x-9|=|3-3x|

I do not see how the solution can be = 2

I would think the solution would be = {2,6}

Can someone explain if I am correct or if the given solution was correct, and why? Thanks

- Dec 4th 2009, 03:51 PMskeeter
- Dec 4th 2009, 03:52 PMBacterius
Because absolute value turns any negative value into its opposite positive value.

With , it would give :

With , it would give :

, so is not a solution.