10 7 5 9算24点

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10 7 5 9算24点

10 7 5 9算24点
10 7 5 9算24点

10 7 5 9算24点
1: (10 - 7) × 5 + 9
2: ((10 - 7) × 5) + 9
3: 9 + (10 - 7) × 5
4: 9 + ((10 - 7) × 5)
5: 9 - (7 - 10) × 5
6: 9 - ((7 - 10) × 5)
7: 9 + (5 × (10 - 7))
8: 9 + 5 ×(10 - 7)
9: 9 - (5 × (7 - 10))
10: 9 - 5 ×(7 - 10)
11: (5 × (10 - 7)) + 9
12: 5 × (10 - 7) + 9