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October 30, 2014

October 30, 2014

Posted by **Colby** on Monday, May 16, 2011 at 7:08pm.

x + y = 5

x - y = -9

- math -
**Reiny**, Monday, May 16, 2011 at 9:15pmadd them

2x = -4

x = -2

sub back into first

-2+y = 5

y = 7

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