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