Cj

30

50

30

0

0

0

b / a i k

Cb

Xb

b

x1

x2

x3

x4

x5

x6

0

x4

10,000

17

12

12

1

0

0

10,000/12

0

x5

12,000

0

23

8

0

1

0

12,000/23

0

x6

20,000

30

[45]

20

0

0

1

20,000/45

检验行

0

−30

−50

−30

0

0

0

存在负检验数