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November 23, 2014

November 23, 2014

Posted by **Anonymous** on Tuesday, October 18, 2011 at 10:43pm.

- Algebra -
**Ms. Sue**, Tuesday, October 18, 2011 at 10:52pmLet x = a longer side

2x + x - 9 = 57

3x = 57 + 9

3x = 66

x = 22

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