4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/24 02:40:04
4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
4X-3Y-6Z=0
4X-3Y=6Z①
X+2Y-7Z=0
X+2Y=7Z②
①-②×4:-11Y=-22Z
Y=2Z
将Y=2Z代入②
X=3Z
(X+Y-Z)/(X-Y+2Z)=(3Z+2Z-Z)/(3Z-2Z+2Z)=4Z/(3Z)=4/3
4x-3y-6z=0,x+2y-7z=0,xyz的积不等于0,求(x+y-z)/(x-y+2z)的值
已知方程组4x-3y-6z=0 和x+2y-7z=0 求(x-y+z)÷(x+y+z)=?
4x-3y-6z=0 x+2y-7z=0 求x+y+3z/4x-y-5z
x-y-z=0 {x+y-3z=4 2x-5y+7z=21 三元一次方程解
已知x:y:z=2:3:4,求(y+z-x):(2z+3x-4y)的值,又知x+y+z=7,求x,y,z.
1.{x:y:z=3:4:5 2x+3y-5z=-142.{x-y-z=-1 3x+5y+7z=11 4x-y+2z=-13.{x+y=1 x+z=0 2x+y+2z=44.{x-y+z=-3 2x-y-z=-2 -3x+y+z=-15.{x-y+z=-3 3x+y-4z=6 2x+y-z=36.{x-2y+5z=16 2x+y-5z=7 2x-y+z=38
x-y+z=6 x+y-z=0 2x-3y+8z=33
已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z
若4x-3y-6z=0,x+2y-7z=0,则x+y+z/3x-y+z=?
已知4x-3y-6z=0,x+2y-7z=0,则x-y+z/x+y+z=_________
已知4x-3y+6z=0 x+2y-7z=0 则x-y+z/x+y-z=?
4x-3y-6z=0,x+2y-7z=0,x-y+z/x+y+z=?
已知{4x-3y-6z=0、x+2y-7z=0,则x-y+z:x+y+z=
4x-3y-6z=0,x+2y-7z=0是一个方程组,那么x-y+z/x+y+z的值等于
已知有理数x、y、z满足条件|x-z-2|+(3x-6y-7)^2+|3y+3z-4|=0,求x、y、z
已知:4x-3y-6z=0,x+2y-7z=0.求出x-y+z÷x+y+z=?
三元一次方程解 1.{x+y-z=5 {3x+2y+z=2 {2x-2y+z=-31.{x+y-z=5 2.{9x-5y+x=-6 3.{x-y=3 4.{x+y=3 5.{4x-2y+z=7{3x+2y+z=2 {9x+y-2z=3 {x+z=7 {y+z=4 {2x-y-3z=28{2x-2y+z=-3 {-9x+3y-5z=0 {y-z=6 {z+x=5 {x+y-2z=13
已知4x-5z=y-x+6z=x+y+z,xyz不等于0,求x:y:z