已知方程组2x-3y+z=0 3x-2y+3z=0(xyz≠0)则x比y比z=
问题描述:
已知方程组2x-3y+z=0 3x-2y+3z=0(xyz≠0)则x比y比z=
答
2x-3y+z=0 (1)
3x-2y+3z=0 (2)
(1)*3-(2)得
3x-7y=0
y=3/7x
(2)*3-(1)*2得
5x+7z=0
z=-5/7x
x:y:z=x:3/7x:-5/7x=7:3:-5