x+2y-4z=0,3x+y-z=0,则x:y:z=?::

来源:学生作业帮助网 编辑:六六作业网 时间:2024/06/17 18:20:59
x+2y-4z=0,3x+y-z=0,则x:y:z=?::x+2y-4z=0,3x+y-z=0,则x:y:z=?::x+2y-4z=0,3x+y-z=0,则x:y:z=?::3x+y-z=012x+4

x+2y-4z=0,3x+y-z=0,则x:y:z=?::
x+2y-4z=0,3x+y-z=0,则x:y:z=?::

x+2y-4z=0,3x+y-z=0,则x:y:z=?::
3x+y-z=0
12x+4y-4z=0和x+2y-4z=0相减的11x+2y=0
11x+2y=0得x/y=-2/11
3x+y-z=0
6x+2y-2z=0和x+2y-4z=0相减的5x+2z=0
5x+2z=0得x/z=-2/5
所以x:y:z=-2:11:5