x+2y+z=8 (1)
2x-y-z=-3 (2)
3x+y-2z=1 (3)
(1)+(2):
3x+y=5 (4)
(1)×2+(3):
5x+5y = 17 (6)
(4)×5-(6):
10x = 8
x =0.8
代入到(4):
y= 5-2.4=2.6
代入到(1):
z = 8-5.2-0.8 = 2
所以:
x= 0.8
y=2.6
z=2
秋风燕燕为您解答,肯定对
有什么不明白可以继续问,随时在线等.
x+2y+z=8 (1)
2x-y-z=-3 (2)
3x+y-2z=1 (3)
(1)+(2):
3x+y=5 (4)
(1)×2+(3):
5x+5y = 17 (6)
(4)×5-(6):
10x = 8
x =0.8
代入到(4):
y= 5-2.4=2.6
代入到(1):
z = 8-5.2-0.8 = 2
所以:
x= 0.8
y=2.6
z=2
秋风燕燕为您解答,肯定对
有什么不明白可以继续问,随时在线等.