X=(Y+Z+200)*1/4Y=(X+Z+200)*2/7Z=(X+Y+200)*8/7thank you

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X=(Y+Z+200)*1/4Y=(X+Z+200)*2/7Z=(X+Y+200)*8/7thank you
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X=(Y+Z+200)*1/4Y=(X+Z+200)*2/7Z=(X+Y+200)*8/7thank you
X=(Y+Z+200)*1/4
Y=(X+Z+200)*2/7
Z=(X+Y+200)*8/7
thank you

X=(Y+Z+200)*1/4Y=(X+Z+200)*2/7Z=(X+Y+200)*8/7thank you
把分母移过来化为x.y.z的加减方程,再相加相减消去一个相同的字母,在解个二元一次方程组就行拉（手机用户不方便详细过程）

化简得4X-Y-Z=200 (1)
2X-7Y+2Z=400 (2)
8X+8Y-9Z=-1600 (3)
(1)*2=10X-9Y=800
(1)*9=28X-17Y=3400
∴X=8500/41 Y=5800/41 Z=20000/41

X=(Y+Z+200)*1/4 1
Y=(X+Z+200)*2/7 2
Z=(X+Y+200)*8/7 3
1：两边乘4,4X=Y+Z+200,4X-Y-Z=200 ①
2：两边乘7 7Y=2X+2Z+400,-2X+7Y-2Z=400 ②
3：两边乘7 7Z=8X+8Y+1600,-8X-8Y+7Z=1600 ③
①乘7:28X-7Y-7Z=140...

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X=(Y+Z+200)*1/4 1
Y=(X+Z+200)*2/7 2
Z=(X+Y+200)*8/7 3
1：两边乘4,4X=Y+Z+200,4X-Y-Z=200 ①
2：两边乘7 7Y=2X+2Z+400,-2X+7Y-2Z=400 ②
3：两边乘7 7Z=8X+8Y+1600,-8X-8Y+7Z=1600 ③
①乘7:28X-7Y-7Z=1400 ④
④+②:26X-9Z=1800 ⑥
①乘8:32X-8Y-8Z=1600 ⑤
⑤减③：40X-15Z=0 得到X=3/8Z代入⑥，Z=2400.X=900
代入①最后得到Y=600

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解:X=(Y+Z+200)*1/4 ....a
Y=(X+Z+200)*2/7 .....b
Z=(X+Y+200)*8/7 .....c
a：两边乘4,4X=Y+Z+200,4X-Y-Z=200 ①
b：两边乘7 7Y=2X+2Z+400,7Y-2X-2Z=400 ②
c：两边乘7 7Z=8X+8Y+1600,7Z-8X-8Y=1600 ③
①乘7...

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解:X=(Y+Z+200)*1/4 ....a
Y=(X+Z+200)*2/7 .....b
Z=(X+Y+200)*8/7 .....c
a：两边乘4,4X=Y+Z+200,4X-Y-Z=200 ①
b：两边乘7 7Y=2X+2Z+400,7Y-2X-2Z=400 ②
c：两边乘7 7Z=8X+8Y+1600,7Z-8X-8Y=1600 ③
①乘7:28X-7Y-7Z=1400 ④
④+②:26X-9Z=1800 ⑥
①乘8:32X-8Y-8Z=1600 ⑤
⑤减③：40X-15Z=0 得到X=3/8Z代入⑥，Z=2400.X=900
代入①最后得到Y=600

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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)=? 14x+4y+z=200,x+y+z=100求解x,y,z (x+y-z)(x-y+z)= X+Y+Z=? x>=y>=z c语言x=3;y=z=4z>=y>=x 这个不是应该等于（z>y&&y=x)||(z>y&&y>x)||(z=y&&y>x)||(z=y&&y=x)这个难道不是1么 符合z=y&&y>x x/y=(x+z)/(y+z)y/z=(x+y)/(x+z) x-z=-4 z-2y=-1 x+y-z=-1 怎么解 x-y-z=0 4x+8y+z=17 z=1 x+y/2=z+x/3=y+z/4 x+y+z=27 x-4y+z=-302x+y-z=18x--y-z=7 {x+y-z=11 y+z-x=5 z+x-y=1 {x+y-z=11,x-y-z=-5,x-y+z=1 x+2y=3x+2z=4y+z 求x:y:z 若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)= (x*x+2)(y*y+4)(z*z+8)=64xyz,求x,y,z 2|X-Y|+√2Y+Z+Z²-Z+1/4=0求X+Y+Z的值 x:y=3:4 y:z=2:1 x+y+z=20 急! (y+z)/x=(z+x)/y=(x+y)/z求x+y-z/x+y+z的值