解方程组{x+y+z=5 ① {x-y-5z=1 ② {2x-3y+z=14 ③ 急

解方程组x:y=3:2①y:z=5:4②x-y-z=66③ 解方程组x+y/2=z+x/3=y+z/4①x+y+z=27② 解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3 方程组x-y-z=5 y-x-z=1 z-x-y=-15的解是? 解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3 解方程组x+y-z=-5,x-y-z=1,x-y+z=15 解方程组 x+y+z=5 2x-y-z=4 3x-2y-z=9 解方程组x+y+z=6 x+2y-3z=4 2x-y+z=5 方程组x+y-z=11 y+z-x=5 z+x-y=1的解 解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 怎样解三元一次方程组(1)x+y-z=11,y+z-x-5,z+x-y=1 解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18 解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 解方程组x+y=5 y+z=6 x+z=7 解三元一次方程组{x+y=3,y+z=5,z+x=4 解方程组 x+y=5,x+z=7,y+2z=13 解方程组：x+3y=5.y-2z=5.x+z=5 解方程组:x+y=5,y+z=7,x+2z=10