X/Y/Z=3/4/5 X+Y+Z=36
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X/Y/Z=3/4/5X+Y+Z=36X/Y/Z=3/4/5X+Y+Z=36X/Y/Z=3/4/5X+Y+Z=36X=9Y=12Z=15可设比例常数为k所以根据X/Y/Z=3/4/5X+Y+Z=36可
X/Y/Z=3/4/5 X+Y+Z=36
X/Y/Z=3/4/5 X+Y+Z=36
X/Y/Z=3/4/5 X+Y+Z=36
X=9 Y=12 Z=15 可设比例常数为k 所以根据X/Y/Z=3/4/5 X+Y+Z=36可得 3k+4k+5k=36 解得k=3 所以 x=3k=3x3=9 y=4k=4x3=12 z=5k=5x3=15 希望我的回答可以帮助你
X、Y、Z=9、12、15
2x+Y+3z=23,x+4y+5z=36,求X+2Y+3z~
X:Y:Z=3:4:5 X+Y+Z=36 二元一次方程 求出X 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
(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=?
x+y-z=3 y+z-x=5 z+x-y=7 求x,y,z
设|x|-|y|+|z|=|x+y+z|,且|x+y|=4,|y+z|=5,|y|=3,求(x-y-z)^2的值
(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=5 2x+3y-z=9 x-y+z=4
已知3X=4X,5Y=6Z求X+Y:Y+Z
{x:y:z=3:4:5{x+y+z=36
X/Y/Z=3/4/5 X+Y+Z=36
(x+y-z)(x-y+z)=
x,y,z不是0.3z=4y,z=3x求(x+y):(x+z).
一只x/3=y/4=z/5,求x+y+z/x及x+y+z/x-y+z的值
已知:4x-5y+2z=0 x+4y-3z=0则:(x*x+y*y+z*z)/(x*y+y*z+z*x)=____.