作业帮解方程组{2X-Y+Z=-3①,X+3Y-2Z=13②,3X-2Y-Z=2③
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解方程组{2X-Y+Z=-3①,X+3Y-2Z=13②,3X-2Y-Z=2③
解方程组{2X-Y+Z=-3①,X+3Y-2Z=13②,3X-2Y-Z=2③
解方程组{2X-Y+Z=-3①,X+3Y-2Z=13②,3X-2Y-Z=2③
2X-Y+Z=-3 (1)
X+3Y-2Z=13 (2)
3X-2Y-Z=2 (3)
(1)*2+(2): 5X+Y=7 (4)
(1)+(3): 5X-3Y=-1 (5)
(4)-(5): 4Y=8
Y=2
5X+2=7
5X=5
X=1
3-4-Z=2
Z=-3
X=1, Y=2, Z=-3
解方程组x+y/2=z+x/3=y+z/4①x+y+z=27②
方程组{①x:y:z=1:2:3 ②x+y+z=36 这个方程组怎么解
解方程组 :X+Y-3Z=1 Y+Z-3X=2 Z+X-3Y=3
3x-y+z=3,2x+3y-z=12,x+y+z=6解方程组
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3
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=11,x+y+z=0,3x-y+z=-2.
解方程组2x+3y-z=12,3x-y+z=4,x+y+z=6
解方程组 x+y+z=2 x-2y+z=-1 x+2y+3z=-1
解方程组：x-2y+z=-1,x+y+z=2,x+2y+3z=-1
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-4y+z=-3,2x+y-z=18,x-y-z=7.
解方程组x+y-z=0,2x+y+z=7,x-3y+z=8
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