已知x,y,z满足x+2y-4z=0,2x+5y-3z=0,且xyz≠0,则x:y:z等于A.2:1:3B.3:2:1C.1:2:3D.2:3:1
问题描述:
已知x,y,z满足x+2y-4z=0,2x+5y-3z=0,且xyz≠0,则x:y:z等于
A.2:1:3
B.3:2:1
C.1:2:3
D.2:3:1
答
已知x,y,z满足x+2y-4z=0,2x+5y-3z=0,且xyz≠0,则x:y:z等于
A.2:1:3
B.3:2:1
C.1:2:3
D.2:3:1