4,9,12,-5,加减乘除等于24怎么做?

1: 9 + 5 ÷ 4 × 12
2: 9 + (5 ÷ 4) × 12
3: 9 + (5 ÷ 4 × 12)
4: 9 + ((5 ÷ 4) × 12)
5: 9 + (5 ÷ (4 ÷ 12))
6: 9 + 5 ÷(4 ÷ 12)
7: 9 + 5 × 12 ÷ 4
8: 9 + (5 × 12) ÷ 4
9: 9 + (5 × 12 ÷ 4)
10: 9 + ((5 × 12) ÷ 4)
11: 9 + (5 × (12 ÷ 4))
12: 9 + 5 ×(12 ÷ 4)
13: 9 + 12 × 5 ÷ 4
14: 9 + (12 × 5) ÷ 4
15: 9 + (12 × 5 ÷ 4)
16: 9 + ((12 × 5) ÷ 4)
17: 9 + (12 × (5 ÷ 4))
18: 9 + 12 ×(5 ÷ 4)
19: 9 + 12 ÷ 4 × 5
20: 9 + (12 ÷ 4) × 5
21: 9 + (12 ÷ 4 × 5)
22: 9 + ((12 ÷ 4) × 5)
23: 9 + (12 ÷ (4 ÷ 5))
24: 9 + 12 ÷(4 ÷ 5)
25: 5 ÷ 4 × 12 + 9
26: (5 ÷ 4) × 12 + 9
27: (5 ÷ 4 × 12) + 9
28: ((5 ÷ 4) × 12) + 9
29: (5 ÷ (4 ÷ 12)) + 9
30: 5 ÷ (4 ÷ 12) + 9
31: 5 × 12 - 9 × 4
32: (5 × 12) - 9 × 4
33: 5 × 12 -(9 × 4)
34: (5 × 12) - (9 × 4)
35: 5 × 12 - 4 × 9
36: (5 × 12) - 4 × 9
37: 5 × 12 -(4 × 9)
38: (5 × 12) - (4 × 9)
39: 5 × 12 ÷ 4 + 9
40: (5 × 12) ÷ 4 + 9
41: (5 × 12 ÷ 4) + 9
42: ((5 × 12) ÷ 4) + 9
43: (5 × (12 ÷ 4)) + 9
44: 5 × (12 ÷ 4) + 9
45: 12 × 5 - 9 × 4
46: (12 × 5) - 9 × 4
47: 12 × 5 -(9 × 4)
48: (12 × 5) - (9 × 4)
49: 12 × 5 - 4 × 9
50: (12 × 5) - 4 × 9
51: 12 × 5 -(4 × 9)
52: (12 × 5) - (4 × 9)
53: 12 × 5 ÷ 4 + 9
54: (12 × 5) ÷ 4 + 9
55: (12 × 5 ÷ 4) + 9
56: ((12 × 5) ÷ 4) + 9
57: (12 × (5 ÷ 4)) + 9
58: 12 × (5 ÷ 4) + 9
59: 12 ÷ 4 × 5 + 9
60: (12 ÷ 4) × 5 + 9
61: (12 ÷ 4 × 5) + 9
62: ((12 ÷ 4) × 5) + 9
63: (12 ÷ (4 ÷ 5)) + 9
64: 12 ÷ (4 ÷ 5) + 9

4×9-【9+（-5）×3】=24

你确定是 -5吗 如果是的话我只能算出来-24 别的方法我就不知道了,我没算出来.
如果是-5
就是这样算的 [ 12*（—5）]+（4*9）=-24
如果是5的话就是24了