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](/uploads/image/z/4039527-39-7.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%84%7B2X-Y%2BZ%3D-3%E2%91%A0%2CX%2B3Y-2Z%3D13%E2%91%A1%2C3X-2Y-Z%3D2%E2%91%A2)
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
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{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
解三元一次方程组:(一)2x+y+z=4① x-y+3z=3 ②x+z=2③ 二;①2x+y+z=2 ②x+2y+z=5
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解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
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