解方程组:3x-4y=-11,2y-3z=1,2x+z=-1
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解方程组:3x-4y=-11,2y-3z=1,2x+z=-1
解方程组:3x-4y=-11,2y-3z=1,2x+z=-1
解方程组:3x-4y=-11,2y-3z=1,2x+z=-1
3x-4y=-11 (1)
2y-3z=1 (2)
2x+z=-1 (3)
(2)+3(3)
6x+2y= -2
3x+y = -1 (4)
(4)-(1)
5y=10
y=2
from (4)
x=-1
from (1)
z=1
解方程组:{z=-11,4x+2y+z=3,25x+5y+z=60
解方程组{2x+3y+z=11,x+y+z=0,3x-y+z=-2.
解方程组:2x+y+z=-4 x+2y+z=-2 x+y+2z=3
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组2x+3y-z=12,3x-y+z=4,x+y+z=6
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
解方程组x+y/2=z+x/3=y+z/4①x+y+z=27②
解方程组x-4y+z=-3,2x+y-z=18,x-y-z=7.
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
x+y+z+2,4x+2y+z+2,9x+3y+z=6解方程组
方程组x=2y=3z x+y+z=11的解
方程组{x=2y=3z x+y+z=11 的解是
解方程组:x+2y+3z=80,x/2+y/3=z/4,
解方程组x/2=y/3=z/4 ,2x+Y+Z=22
解三元一次方程组{x+y=2 y+z=3 z+x=4
x/2=y/3=z/4 x+y+z=18 求方程组解
解方程组{6x=4y=3z,2x+y+z=22