3,3,5,7算24点

1: 3 × (3 × 5 - 7)
2: 3 × ((3 × 5) - 7)
3: 3 × (5 × 3 - 7)
4: 3 × ((5 × 3) - 7)
5: (3 × 5 - 7) × 3
6: ((3 × 5) - 7) × 3
7: (5 × 3 - 7) × 3
8: ((5 × 3) - 7) × 3
其实都是一样的
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1: 3 × (3 × 5 - 7)
2: 3 × ((3 × 5) - 7)
3: 3 × (5 × 3 - 7)
4: 3 × ((5 × 3) - 7)
5: (3 × 5 - 7) × 3
6: ((3 × 5) - 7) × 3
7: (5 × 3 - 7) × 3
8: ((5 × 3) - 7) × 3
祝你好好学习，天天向上

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

3 × (3 × 5 - 7)

3*(3*5-7)=24