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April 18, 2014

April 18, 2014

Posted by **guy** on Monday, February 6, 2012 at 10:08pm.

- math -
**Reiny**, Monday, February 6, 2012 at 10:29pmStrange way to type it, I read it as

8x-9y = -15

-4x = 19+y

I would double the 2nd:

-8x = 38+2y

or

8x + 2y = -38

8x - 9y = -15

subtract them

11y = -23

y = -32/11

sub into original 2nd

-4x = 19 - 23/11

-4x = 186/11

x = -186/44

x = -186/44 , y = -23/11

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