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September 20, 2014

September 20, 2014

Posted by **Denise** on Thursday, July 25, 2013 at 1:37pm.

5u+2v=15

3u+v=-7

- Math -
**Reiny**, Thursday, July 25, 2013 at 2:15pm1st one: 5u + 2v = 15

double the 2nd: 6u + 2v = -14

subtract them:

-u = 29

u = -29

sub into 2nd:

3(-29) + v = -7

v= -7 + 87 = 80

u = -29 , v = 80

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