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OpenStudy (anonymous):
What is the value of y in the solution of this system? 2x-y-z=11 x+y-4z=-1 -x+3y+z=-10 A) -2 B) -1 C) 1 D) 5
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OpenStudy (anonymous):
A) -2
OpenStudy (anonymous):
can you explain?
OpenStudy (anonymous):
It's quite a work so the best way Ithink is for you to watch this video first then come back with questions if there still are any, ok? http://www.youtube.com/watch?v=aPKz7011lAA
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