Basic Variables | x1 | x2 | x3 | x4 | bi | |
−12 | −20 | −18 | −40 | ≤ | 0 | |
4 | 9 | 7 | 10 | ≤ | 6000 | |
1 | 1 | 3 | 40 | ≤ | 4000 |