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Mathematics 8 Online
OpenStudy (anonymous):

Which ordered triple is a solution of this system? {2x+y-z=7 {-x-2y+4z=-15 {x+2y-5z=17 A. (-2, 6, -5) B. (1, 3, -2) C. (2, 5, 2) D. (3, 1, 0)

OpenStudy (anonymous):

what grade is this?

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