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February 1, 2015

February 1, 2015

Posted by **Jennifer** on Tuesday, July 26, 2011 at 6:56pm.

5x+7y=6

-6x+y=21

- math -
**Reiny**, Tuesday, July 26, 2011 at 8:33pmfrom the 2nd ---> y = 21 + 6x

plug that into the 1st

5x + 7(21+6x) = 6 solve for x, then sub back into

y = 21+6x

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