从方程组4x-3y-3z=0,x-3y+z=0(xyz≠0),则x:z=--,y:z+---

学习时间:2026-03-30 14:16:17 阅读：5757

从方程组4x-3y-3z=0,x-3y+z=0(xyz≠0),则x:z=__,y:z+___

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2026-03-30 14:16:17

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4x-3y-3z=0,========>4x-3y=3z (1)x-3y+z=0(xyz≠0),==>x-3y=-z (2)(1)-(2)得3x=4z,9y=7zx:z=4:3y:z=7:9