用 3 4 5 9怎么算24

(9-(5-4))*3

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

(3*5-9)*6
(9-5+4)*3

(9-(5-4))*3