{x+y+z=6,x-z=2,2x-y+z=5 解方程组

来源：学生作业帮编辑：神马作文网作业帮分类：数学作业时间：2024/11/10 15:45:57

x+y+z=6 (1)
x-z=2 (2)
2x-y+z=5 (3)
(1)+(3)
3x+2z=11 (4)
(2)×2+(2)
2x+3x=4+11
5x=15
所以
x=3
z=x-2=1
y=6-x-z=2

解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 {x+y+z=6,x-z=2,2x-y+z=5 解方程组已知x、y、z满足方程组：x+y-z=6；y+z-x=2；z+x-y=0 求x、y、z的值解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3 解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3 解方程组2x+y-z=7 x+y+z =1 2x-y-z=5 解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6} 解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18 解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值已知x,y,z满足方程组｛x+y-z=6{y+z-x=2{z+x_y=0,求x,y,z的值解三元一次方程组：x+y+z=6,y-z=4,x-y-2z=3, 解方程组2x=3y=6z,x+2y+z=16