3x+2y+z=4 x+y+z=10 2x+3y-z=1
1个回答
1)3x+2y+z=4
2)x+y+z=10
3)2x+3y-z=1
1)加3),5x+5y=5
2)加3),3x+4y=11
x=-7
y=8
z=9
相关问题
2x-y=7 x+y+z=25x+3y+z=2 x-2y+z=-1 3x-4z=4 x+2y+3z=-1x+y-z=6x
2x+3y+z=8 4x-y-z=10 x+2y-z=1
x+y+2z=5 2x-y-z=4 3x+y-3z=10
x-2y+z=9, 2x+y+3z=10, 3x+2y-4z=-3
1:7x+2y-z=7 2:6x-y+z=7 3:4x+3y+z=9 1:9x+4y+z+10 2:-9X+2y+3z=
3x+2y+z=14 { x+y+z=10 2x+3y-z=1
解方程组x+2y+3z=10,x-y+4z=10,x+3y+2z=2.
x-5y-3z=0 y+z-3x=3 x+y+3z=14 y+4z=3 z+x-3y=5 2x+y+z=7 2x-z=1
{x+2y+4z=0{2x-y+3z=-10{3x+y+2z=5
x-3y+2z=1 2x+2y-3z=-10 4x-8y+5z=6