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](/uploads/image/z/19714955-59-5.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%84%EF%BC%9A3x-4y%3D-11%2C2y-3z%3D1%2C2x%2Bz%3D-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
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:x-2y+z=-1,x+y+z=2,x+2y+3z=-1
解方程组1、4x+9y=12,3y-2z=1,2x+6z=32、3x-y+2z=3,2x+y-3z=11,x+y+z=1
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
解三元一次方程组:(1)x+2y+3z=11x-y+4z=10x+3y+2z=2(2)x:y=3:5y:z=5:6x+y
解方程组{x:y:z=1:2:3 {2x+y-3z=15
解二元一次方程组X:Y:Z=1:2:3,X+Y+Z=12
解三元一次方程组x:y:z=1:2:3 x+y+z=36
求三元一次方程组的解有过程 x-y-z=1 3x+5y+7z=11 4x-y+2z=-1
解方程组:x-y-z=-1,3x+5y+7z=11,4x-y+2z=-1
解方程组:{x-y-z=-1,3x+5y+7z=11,4x-y+2z=-1
x-y-z=-1,3x+5y+7z=11,4x-y+2z=-1.方程组的解是什么?
解三元一次方程组1、x+y-z=4 2x-y+z=5 x-3y+z=-2 2、y+2z=-2 3x+y-4z=1 2x-