2x-y+2z=6 3x+y-3z=-4 x+y+z=6
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/26 05:16:42
2x-y+2z=63x+y-3z=-4x+y+z=62x-y+2z=63x+y-3z=-4x+y+z=62x-y+2z=63x+y-3z=-4x+y+z=62x-y+2z=6(1)3x+y-3z=-4
2x-y+2z=6 3x+y-3z=-4 x+y+z=6
2x-y+2z=6 3x+y-3z=-4 x+y+z=6
2x-y+2z=6 3x+y-3z=-4 x+y+z=6
2x-y+2z=6 (1)
3x+y-3z=-4 (2)
x+y+z=6 (3)
(1)+(2)
5x-z=2 (4)
(1)+(3)
3x+3z=12
x+z=4 (5)
(4)+(5)
6x=6
x=1
z=4-x=3
y=2x+2z-6=2
X=1,Y=2,Z=3
(1)2x-y+2z=6
(2)3x+y-3z=-4
(3)x+y+z=6
(1)+(2),5x-z=2 (4)
(1)+(3),3x+3z=12,x+z=4 (5)
联立(4)(5)，得
x=1,z=3,代入(1)得
y=2
x+2y=3x+2z=4y+z 求x:y:z
x+y/2=z+x/3=y+z/4 x+y+z=27
3x-y+z=4,2z+3y-z=12,x+y+z=6的解
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
x+y+z=6 x+2y+3z=14 y+1=z
三元一次方程x+y+z=0 4x+2y+z=3 9x+3y+z=6x+y+z=04x+2y+z=3 9x+3y+z=6
2x+z=10 x+y-z=4 3x-y-z=0
x=y/z=z/3,x+y+z ＝12,求2x+3y+4z是多少,
2x-y+2z=6 3x+y-3z=-4 x+y+z=6
x+y+z=4 2x+3y-z=6 3x+2y+2z=10
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=6;x-3y+2z=0;3x+2y-z=4
x+y-z=6 x-3y+2z=1 3x+2y-z=4
2x-y+2z=-17 3x+y-3z=-4 x+y+z=6
2x-y+2z=-17 3x+y-3z=-4 x+y+z=6
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}