Abs Values help

[judisons2]

Hi,
I was doing my questions in my work book and one of them was

|2x - 1| + |x + 3| = 5

I got -1,1, 9 and -7/3
Answers only say -1 and 1. Why is this?:-?

 

[srmichael]

Hi,
I was doing my questions in my work book and one of them was

|2x - 1| + |x + 3| = 5

I got -1,1, 9 and -7/3
Answers only say -1 and 1. Why is this?:-?

Always check your answers for any extraneous solutions. Plug in x = 9 and watch what happens.

 

[lalaland]

Thank you

Always check your answers for any extraneous solutions. Plug in x = 9 and watch what happens.

Thank you for your help

 

[judisons2]

Lel

WHY are you using more than 1 name? Judisons ???

Thats not me lol

 

[judisons2]

Always check your answers for any extraneous solutions. Plug in x = 9 and watch what happens.

Oh ok thanks!