5,6,7,7 (24点)

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5,6,7,7(24点)5,6,7,7(24点)5,6,7,7(24点)1:(5-7÷7)×62:(5-(7÷7))×63:6×(5-7÷7)4:6×(5-(7÷7))

5,6,7,7 (24点)
5,6,7,7 (24点)

5,6,7,7 (24点)
1: (5 - 7 ÷ 7) × 6
2: (5 - (7 ÷ 7)) × 6
3: 6 × (5 - 7 ÷ 7)
4: 6 × (5 - (7 ÷ 7))