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December 19, 2014

December 19, 2014

Posted by **A.W.** on Friday, March 6, 2009 at 2:53pm.

- Algebra -
**Damon**, Friday, March 6, 2009 at 4:51pm10 x + 6 y = -14 yes

21 x - 6 y = 39 yes

add those two

31 x + 0 = 25

so

x = -25/31 yes

Now go back and use -25/31 in either of the original equations to get y

5 (-25/31) + 3 y = -7

3 y = 125/31 -7

3 y = (125-217)/31

y = - 92/3

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