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OpenStudy (anonymous):
Help please! 1.Solve the system by elimination x+5y-4z=-10 2x-y+5z=-9 2x-10y-5z=0 A.(5,-1,0) B.(-5,1,0) C.(-5,-1,0) D.(-5,-1,-2) 2.Solve the system by Substitution. 2x-y+z=-4 z=5 -2x+3y-z=-10 A.(-8,7,5) B.(-8,-7,5) C.(8,-7,5) D.(-8,-7,-5)
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