4*X+3*Y+3/1*Z=100 X+Y+Z=100 问X=多少Y=多少Z=多少要解题过程.

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4*X+3*Y+3/1*Z=100 X+Y+Z=100 问X=多少Y=多少Z=多少要解题过程.
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4*X+3*Y+3/1*Z=100 X+Y+Z=100 问X=多少Y=多少Z=多少要解题过程.
4*X+3*Y+3/1*Z=100 X+Y+Z=100 问X=多少Y=多少Z=多少要解题过程.

4*X+3*Y+3/1*Z=100 X+Y+Z=100 问X=多少Y=多少Z=多少要解题过程.
3/1*z是什么意思?知道什么是白费两道手吗!
mx=y
nx=z
4x+3mx+3/nx=100
x+mx+nx=100
4+3m+1/n=1+m+n.①
3-2m+3/n-n=0.②
m=(3-n+3/n)/2
4+3*(3-n+3/n)/2+3/n-n=1+n+(3-n+3/n)
3-2n+3/n+3-n+3/n=0
6-3n+6/n=0
6n+6-3n^2=0
n^2-2n-2=0
n=1±√3
1）n=1+√3
m=0.5[3-1-√3+3(√3-1)/2]/2
=0.25(√3+1)/2=(√3+1)/8
x+(√3+1)x/8+(√3+1)x=100
x=100/[1+1/8+1+√3/8+√3)
=100/(17/8+9√3/8)
=800/(17+9√3)
=800*(17-9√3)/46
=400(17-9√3)/23
所以,x=4(√3-1)y=(√3-1)z/2=400(17-9√3)/23
2) x=1-√3
x(1+1-√3+√3/8+1/8)=100
(17-7√3)x=100
x=100/(17-7√3)=100(17+7√3)/142=50(17-7√3)/71
x=4(√3-1)y=(√3-1)z/2=50(17-7√3)/71

x+y/2=z+x/3=y+z/4 x+y+z=27 x+2y=3x+2z=4y+z 求x:y:z 4x+y+z=-3 2x+3y-4z=-10 x+2y-z=-1 x-y-z=1 2x+y-3z=4 3x-2y-z=-1 已知4x-3y-3z=0 x-3y-z=0 (1)求x:y:z {3X+2Y+Z=4X+Y+Z=102X+3Y-Z=1 x+y-z=6 x-3y+2z=1 3x+2y-z=4 阿 x+y-z=6,x-3y+2z=1,3x+2y-z=4 x+y+z=-5,3x+y+z=1,4x+3y+2z=-2快 3x+2y+z=4 x+y+z=10 2x+3y-z=1 x+y-z=6 x-3y+2z=1 3x+2y-z=4 3X+Y+Z=0,2X-Y+3Z=1,X+2Y-Z=4 x+y-z=6 x-3y+2z=1 3x+y-z=4 x+y+z=2 4x+2y+z=4 2x+3y+z=1 x-y+z=-1 5x+2y-z=6 4x-3y+2z=-5 3x-y+2z=-1 4x+y+z=5 x-2y-z=-2 x+y+z=-1 4x-2y+3z=5 y-z=8-2x x+y+z=1 4x+5y-z=6 x+2y-z=3