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January 29, 2015

January 29, 2015

Posted by **Greg** on Friday, May 20, 2011 at 7:52am.

- Math -
**Reiny**, Friday, May 20, 2011 at 8:56amI assume you have

x+y = -2

8x - y = -2

solve by graphing??

(perhaps to show the concept)

Just add them

9x = -4

x = -4/9

then -4/9+y=-2

y = -14/9

(I doubt if you could have obtained that exact value by looking at a graph)

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