若2x-y=3,2y-z=4,2z-x=5求解
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/11 01:44:25
xQJ@,S:!mҩ~L*JKm.-H51!t_i
(dqϽܜ{kÙ-5X|~|zdžY T4t4Ttts +%UZOEwћW=f
/^gU=Y[Щj[O6aj[S\ao8;{-@Qwq~(٢v+eF#R$ƤIM@M kpki4% Afv_F.Gߏ+JKN>dIXb Jnyկ[G1$,|\h AE-i4Ny"757OC
C
若x+y+z=3y=2z,则x/x+y+z=?
x+2y=3x+2z=4y+z 求x:y:z
x+y/2=z+x/3=y+z/4 x+y+z=27
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)=
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z
2x+z=10 x+y-z=4 3x-y-z=0
若|x+3|+|y-2|+|2×z+1|=0求(x×z-y×z)(y-x+z)的值
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
若x/2=y/3=z/4,则3x-2y+5z/x+y+z=
若x/3=y/4=z/5,求x+y+z/3x-2y+z的值.
若x:y:z=2:3:4,求x+y+z/x-2y+3z的值
若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值
证明 :x/(y+z)+y/(z+x)+z/(x+y)>=3/2其中 x,y,z>0
若xyz≠0且4(x/z)-5(y/z)=-2,(x/z)+4(y/z)=3,求x:y:z
(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=?
若4x-3y-6z=0,x+2y-7z=0,则x+y+z/3x-y+z=?
x/2=y/3=z/5 x+3y-z/x-3y+z