Here's the question you clicked on:
kbmath10
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
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