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OpenStudy (ayee_ciera):
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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OpenStudy (anonymous):
B
OpenStudy (anonymous):
2x-y+z=-4 2(-8)-(-7)+5 -16+7=-9+5=-4
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