X-3Y+2Z=02x+3y-8z=0且XYZ不等于0求X:Y:Z=?

问题描述:

X-3Y+2Z=02x+3y-8z=0且XYZ不等于0求X:Y:Z=?

式1+式2得3X=7Z式1*2-式2得3Y=4ZX:Y:Z=7:4:302x是什么