4X-3Y-6Z=0 X+2Y-7Z=0 4X+8Y-28Z=0 -11Y+22Z=0 Y=2Z X=7Z-2Y=7Z-4Z=3Z 5X+2Y-Z除以2X-3Y-10Z =45Z+8Z-Z除以18Z-12Z-10Z =52Z除以(-4Z) =-13
