3x+2y-6z+2(2x+3y+3z)=24+36即7x+8y=60
2x+3y+3z+(6x-4y-3z)=18+36即8x-y=54
7x+8y+8（8x-y）=60+8*54即71x=492 x=492/71
y=102/71
z=-4/71 3x+2y-6z+2(2x+3y+3z)=24+36即7x+8y=60
2x+3y+3z+(6x-4y-3z)=18+36即8x-y=54
7x+8y+8（8x-y）=60+8*54即71x=492 x=492/71
y=102/71
z=-4/71