3, 负6,7, 负13 用加减剩除怎样算才等于24

-(-6)×3-7-(-13)=24

注：6可用-（-6),13可用-(-13)代替。呵呵。

1: 3 × 6 - 7 + 13
2: (3 × 6) - 7 + 13
3: (3 × 6 - 7) + 13
4: ((3 × 6) - 7) + 13
5: 3 × 6 -(7 - 13)
6: (3 × 6) - (7 - 13)
7: 3 × 6 + 13 - 7
8: (3 × 6) + 13 - 7
9: (3 × 6 + 13) - 7
10: ((3 × 6) + 13) - 7
11: 3 × 6 +(13 - 7)
12: (3 × 6) + (13 - 7)
13: (3 × (13 - 7)) + 6
14: 3 × (13 - 7) + 6
15: 6 - (3 × (7 - 13))
16: 6 - 3 ×(7 - 13)
17: 6 × 3 - 7 + 13
18: (6 × 3) - 7 + 13
19: (6 × 3 - 7) + 13
20: ((6 × 3) - 7) + 13
21: 6 × 3 -(7 - 13)
22: (6 × 3) - (7 - 13)
23: 6 + (3 × (13 - 7))
24: 6 + 3 ×(13 - 7)
25: 6 × 3 + 13 - 7
26: (6 × 3) + 13 - 7
27: (6 × 3 + 13) - 7
28: ((6 × 3) + 13) - 7
29: 6 × 3 +(13 - 7)
30: (6 × 3) + (13 - 7)
31: 6 - (7 - 13) × 3
32: 6 - ((7 - 13) × 3)
33: 6 + (13 - 7) × 3
34: 6 + ((13 - 7) × 3)
35: 13 + 3