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January 26, 2015

January 26, 2015

Posted by **chris** on Monday, April 8, 2013 at 12:48am.

3x-2y-z=-20

x-y=10

- math -
**Shaniqua**, Monday, April 8, 2013 at 2:37amSolve for x and y using elimination or substitution and then its like a two step equation when solving for z

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