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April 18, 2014

April 18, 2014

Posted by **Katy** on Sunday, March 25, 2012 at 7:13pm.

y=-2+7x

10x-7y=209

- Algebra -
**Steve**, Monday, March 26, 2012 at 10:14amso, make the substitution:

10x - 7(-2+7x) = 209

10x + 14 - 49x = 209

-39x = 195

x = -5

y=-2+7(-5) = -37

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