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January 31, 2015

January 31, 2015

Posted by **Jessica** on Monday, February 14, 2011 at 10:34pm.

7x-y=17

x+7y=31

What is the solution of the system?

- Math -
**Reiny**, Monday, February 14, 2011 at 11:46pmmultiply the fist equation by 7

49x - 7y = 119

add the second

x + 7y = 31

50x = 150

x = 3

sub that into the second equation ....

you finish it, let me know what you got.

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