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December 20, 2014

Homework Help: math(algebra 1)

Posted by please help!!! on Tuesday, January 18, 2011 at 10:53pm.

i dont get these please help me:
use the subtitution method to solve the linear system
1)3x+y=0 x-y=4
2)y=-3x-1 x-3y=3
3)3x-y=9 2x+y=6
4)x-2y=0 3x+y=0
Thank you!!:)

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