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September 22, 2014

September 22, 2014

Posted by **Anonymous** on Tuesday, September 21, 2010 at 6:59pm.

absolute value 2x-20 absolute value=absolute value 9x+ ansolute value 15

|2x-20|=|9x+15|

- college math -
**MathMate**, Tuesday, September 21, 2010 at 7:42pmFollowing the definition of the absolute function, we have:

|2x-20|=2x-20 when 2x-20≥0, and

|2x-20|=-(2x-20) when 2x-20<0

and a similar relationship exists for the right hand side.

For this particular case, solving the following equations for x will cover all cases:

2x-20=9x+15 ...(1), and

2x-20=-(9x+15) ...(2)

The following graphic depicts the solutions to (1) and (2):

http://img228.imageshack.us/img228/2189/1285109962.png

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