已知X:Y=1:3,Y:Z=5:4 (1)求X:Y:Z (2)如果X+Y+Z=96,求X,Y,Z的值 3元1次方程
来源:学生作业帮助网 编辑:六六作业网 时间:2025/01/23 09:17:12
已知X:Y=1:3,Y:Z=5:4(1)求X:Y:Z(2)如果X+Y+Z=96,求X,Y,Z的值3元1次方程已知X:Y=1:3,Y:Z=5:4(1)求X:Y:Z(2)如果X+Y+Z=96,求X,Y,Z
已知X:Y=1:3,Y:Z=5:4 (1)求X:Y:Z (2)如果X+Y+Z=96,求X,Y,Z的值 3元1次方程
已知X:Y=1:3,Y:Z=5:4 (1)求X:Y:Z (2)如果X+Y+Z=96,求X,Y,Z的值 3元1次方程
已知X:Y=1:3,Y:Z=5:4 (1)求X:Y:Z (2)如果X+Y+Z=96,求X,Y,Z的值 3元1次方程
X:Y=1:3, Y:Z=5:4
x=5a y=15a z=12a
X:Y:Z=5:15:12
X+Y+Z=96
5a+15a+12a=96
32a=96
a=3
x=15 y=45 z=36
这道题用不着解三元一次方程组的,设X=5K,Y=15K,Z=12K,这样设完以后什么问题都决了。(1)X:Y:Z=5:15:12 (2)代入32K=96解得K=3进而求得X=15,Y=45,Z=36
1.Y是Z的5/4,所以X:Y:Z=1:3:5/4=5:15:12
2.根据上一问的结果,5+15+12=32,96/32=3,所以X=3乘以5=15,Y=3乘以15=45,Z=3乘以12=36
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
已知x:y:z=4:5:7,求:(1)2x+3y+z/5z; (2)x+y/y+z.
已知1/3x=1/4y=1/5z,求x:y:z
已知1/3x=1/4y=1/5z,求x:y:z
已知3x=4Y,5Y=6Z,求 (1)x:y:z;(2)x+y/y+z.请说明道理,
已知3x=4Y,5Y=6Z,求 (1)x:y:z;(2)x+y/y+z
已知 x/(y+z)+y/(z+x)+z/(x+y)=1求 (x*x)/(y+z)+(y*y)/(x+z)+(z*z)/(x+y)=?
已知x:y=3:5 y:z=6:1,求x:y:z( ):( ):( )
已知4x-3y-3z=0 x-3y-z=0 (1)求x:y:z
已知x:y:z=1:3:5,求(2x+3y-z)/(x+y-2z)的值
已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值
已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值
三元一次方程组题目x+y-z=11 y+z-x=5 x-y+z=1x+y=4 y+z=3 x+z=5若已知x-3y+2z=0 2x+3y-8z=0, 且xyz≠0,则x:y:z=
已知3X=5Y ,4Y=5Z,求:(1) Y与Z的比值 (2) x:y:z
已知3X=4X,5Y=6Z求X+Y:Y+Z
(x+y):(y+z):(z+x)=3:4:5 3x+y-z=-4已知(x+y):(y+z):(z+x)=3:4:5 ;3x+y-z=-4求x y z
已知x/2=y/3=z/4,求下列各式 (1)(x+y+z)/x (2)(x-y+2x/(x-y-2z)
1、已知x/y=7/2,求x/x+y 2、已知x/2=y/3=z/4,求x+y+z/2x+3y-z!1、已知x/y=7/2,求x/x+y2、已知x/2=y/3=z/4,求x+y+z/2x+3y-z!