Answer:
x−4y+5z=0x-4y+5z=0 , x+z−3y=0x+z-3y=0
6x−y+4z=06x-y+4z=0 , x−7y+z=0x-7y+z=0
x+y−z=3x+y-z=3 , 2x−8y+13z=1
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