X:Y=3:2 Y:Z=5:4 X+Y+Z=66解方程
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/22 18:10:08
X:Y=3:2Y:Z=5:4X+Y+Z=66解方程X:Y=3:2Y:Z=5:4X+Y+Z=66解方程X:Y=3:2Y:Z=5:4X+Y+Z=66解方程X:Y=3:2Y:Z=5:4X+Y+Z=66假设:
X:Y=3:2 Y:Z=5:4 X+Y+Z=66解方程
X:Y=3:2 Y:Z=5:4 X+Y+Z=66解方程
X:Y=3:2 Y:Z=5:4 X+Y+Z=66解方程
X:Y=3:2
Y:Z=5:4
X+Y+Z=66
假设:X=3a,Y=2a
推出:
Z=8/5a
所以:3a+2a+8/5a=66
推出:
(15+10+8)/5a=66
a=66×5/33=10
推出:
X=30
Y=20
Z=16
2X=3Y
5Z=4Y
X=3/2Y,Z=4/5Y
3/2Y+Y+4/5Y=66
Y=27.5
X=41.25
Z=22
4 X+Y+Z=66
4x=66-3+5
x=66-8/4
x=58/4
x=14...2
Z=16
Y=20
X=30
设X=15a y=10a z=8a 则X+Y+Z=33a =66 则a=2 故 X=30 Y=20 Z=16
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian
(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=?
设|x|-|y|+|z|=|x+y+z|,且|x+y|=4,|y+z|=5,|y|=3,求(x-y-z)^2的值
x+y=5 2x+3y-z=9 x-y+z=4
(4x-2y-z)-{5x-[8y-2z-(x+y)]-2(3y-10z)}=?好难啊
x/2=y/3=z/5 x+3y-z/x-3y+z
x+y/2=z+x/3=y+z/4 x+y+z=27
x+2y=3x+2z=4y+z 求x:y:z
x:y=3:2 y:z=5:4 x+y+z=66
x:y=3:2 y:z=5:4 x+y+z=66
{x:y=2:3 y:z=4:5 x+y+z=35
x:y=2:3 y:z=4:5 x+y+z=35
x+y+z=111,y:x=3:2,y:z=5:4
3x=4y 2y=5z 试求x:y:z
已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX..
已知:4x-5y+2z=0 x+4y-3z=0则:(x*x+y*y+z*z)/(x*y+y*z+z*x)=____.
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)