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July 28, 2014

July 28, 2014

Posted by **Rmz** on Thursday, October 15, 2009 at 8:28pm.

- Math 156 -
**Ian**, Thursday, October 15, 2009 at 8:31pmx1 + x2 = 77

x2 - x1 = 27

x2 = 27 + x1

x1 + (27 + x1) = 77

2 x1 = 50

x1 = 25

x2 = 52

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