1: 3 × (6 - 5 + 7)
2: 3 × ((6 - 5) + 7)
3: 3 × (6 - (5 - 7))
4: 3 × (6 + 7 - 5)
5: 3 × ((6 + 7) - 5)
6: 3 × (6 + (7 - 5))
7: 3 × (7 - 5 + 6)
8: 3 × ((7 - 5) + 6)
9: 3 × (7 - (5 - 6))
10: 3 × (7 + 6 - 5)
11: 3 × ((7 + 6) - 5)
12: 3 × (7 + (6 - 5))
13: (5 + 7) ÷ 3 × 6
14: ((5 + 7) ÷ 3) × 6
15: (5 + 7) ÷ (3 ÷ 6)
16: (5 + 7) × 6 ÷ 3
17: ((5 + 7) × 6) ÷ 3
18: (5 + 7) × (6 ÷ 3)
19: 6 ÷ 3 ×(5 + 7)
20: (6 ÷ 3) × (5 + 7)
21: 6 ÷ (3 ÷ (5 + 7))
22: 6 ÷ 3 ×(7 + 5)
23: (6 ÷ 3) × (7 + 5)
24: 6 ÷ (3 ÷ (7 + 5))
25: (6 - 5 + 7) × 3
26: ((6 - 5) + 7) × 3
27: (6 - (5 - 7)) × 3
28: (6 × (5 + 7)) ÷ 3
29: 6 × (5 + 7) ÷ 3
30: 6 × ((5 + 7) ÷ 3)
31: (6 + 7 - 5) × 3
32: ((6 + 7) - 5) × 3
33: (6 + (7 - 5)) × 3
34: (6 × (7 + 5)) ÷ 3
35: 6 × (7 + 5) ÷ 3
36: 6 × ((7 + 5) ÷ 3)
37: (7 + 5) ÷ 3 × 6
38: ((7 + 5) ÷ 3) × 6
39: (7 + 5) ÷ (3 ÷ 6)
40: (7 + 5) × 6 ÷ 3
41: ((7 + 5) × 6) ÷ 3
42: (7 + 5) × (6 ÷ 3)
43: (7 - 5 + 6) × 3
44: ((7 - 5) + 6) × 3
45: (7 - (5 - 6)) × 3
46: (7 + 6 - 5) × 3
47: ((7 + 6) - 5) × 3
48: (7 + (6 - 5)) × 3