3.7.9.12中间加上各种符号使结果等24

3.7.9.12中间加上各种符号使结果等24
3.7.9.12中间加上各种符号使结果等24

3.7.9.12中间加上各种符号使结果等24
3*7+12-9=24

3X7-9+12=24

1: 3 - (9 - 12) × 7
2: 3 - ((9 - 12) × 7)
3: 3 - (7 × (9 - 12))
4: 3 - 7 ×(9 - 12)
5: 3 × 7 - 9 + 12
6: (3 × 7) - 9 + 12
7: (3 × 7 - 9) + 12
8: ((3 × 7) - 9) + 12

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1: 3 - (9 - 12) × 7
2: 3 - ((9 - 12) × 7)
3: 3 - (7 × (9 - 12))
4: 3 - 7 ×(9 - 12)
5: 3 × 7 - 9 + 12
6: (3 × 7) - 9 + 12
7: (3 × 7 - 9) + 12
8: ((3 × 7) - 9) + 12
9: 3 × 7 -(9 - 12)
10: (3 × 7) - (9 - 12)
11: 3 + (7 × (12 - 9))
12: 3 + 7 ×(12 - 9)
13: 3 × 7 + 12 - 9
14: (3 × 7) + 12 - 9
15: (3 × 7 + 12) - 9
16: ((3 × 7) + 12) - 9
17: 3 × 7 +(12 - 9)
18: (3 × 7) + (12 - 9)
19: 3 + (12 - 9) × 7
20: 3 + ((12 - 9) × 7)
21: (3 × (12 - 7)) + 9
22: 3 × (12 - 7) + 9
23: 9 - (3 × (7 - 12))
24: 9 - 3 ×(7 - 12)
25: 9 + (3 × (12 - 7))
26: 9 + 3 ×(12 - 7)
27: (9 × (7 - 3)) - 12
28: 9 × (7 - 3) - 12
29: 9 - (7 - 12) × 3
30: 9 - ((7 - 12) × 3)
31: 9 + (12 - 7) × 3
32: 9 + ((12 - 7) × 3)
33: (7 - 3) × 9 - 12
34: ((7 - 3) × 9) - 12
35: 7 × 3 - 9 + 12
36: (7 × 3) - 9 + 12
37: (7 × 3 - 9) + 12
38: ((7 × 3) - 9) + 12
39: 7 × 3 -(9 - 12)
40: (7 × 3) - (9 - 12)
41: 7 × 3 + 12 - 9
42: (7 × 3) + 12 - 9
43: (7 × 3 + 12) - 9
44: ((7 × 3) + 12) - 9
45: 7 × 3 +(12 - 9)
46: (7 × 3) + (12 - 9)
47: (7 × (12 - 9)) + 3
48: 7 × (12 - 9) + 3
49: 12 + 3 × 7 - 9
50: (12 + 3 × 7) - 9
51: (12 + (3 × 7)) - 9
52: 12 + (3 × 7) - 9
53: 12 + (3 × 7 - 9)
54: 12 + ((3 × 7) - 9)
55: 12 - 9 + 3 × 7
56: (12 - 9) + 3 × 7
57: 12 - 9 +(3 × 7)
58: (12 - 9) + (3 × 7)
59: 12 - (9 - 3 × 7)
60: 12 - (9 - (3 × 7))
61: 12 - 9 + 7 × 3
62: (12 - 9) + 7 × 3
63: 12 - 9 +(7 × 3)
64: (12 - 9) + (7 × 3)
65: 12 - (9 - 7 × 3)
66: 12 - (9 - (7 × 3))
67: (12 - 9) × 7 + 3
68: ((12 - 9) × 7) + 3
69: 12 + 7 × 3 - 9
70: (12 + 7 × 3) - 9
71: (12 + (7 × 3)) - 9
72: 12 + (7 × 3) - 9
73: 12 + (7 × 3 - 9)
74: 12 + ((7 × 3) - 9)
75: (12 - 7) × 3 + 9
76: ((12 - 7) × 3) + 9

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