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September 18, 2014

September 18, 2014

Posted by **Rissa** on Wednesday, March 10, 2010 at 7:22pm.

5r-3s=13

3r+5s=69

- Math116 -
**Damon**, Wednesday, March 10, 2010 at 7:30pm15 r - 9 s = 39

15 r + 25s = 345

add negative of second to first

0 r -34 s = -306

s = 9 etc

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