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October 21, 2014

October 21, 2014

Posted by **Vic** on Wednesday, September 28, 2011 at 12:21am.

- Math -
**PsyDAG**, Wednesday, September 28, 2011 at 2:56amLet x = # of CDs.

12x = 15x - 60

60 = 3x

20 = x

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