5.7.7.9(怎样算24点)

5.7.7.9(怎样算24点)
2024-11-06 05:03:40
推荐回答(2个)
回答(1):

1: (5 + 7) × (9 - 7)
2: (7 + 5) × (9 - 7)
3: (9 - 7) × (5 + 7)
4: (9 - 7) × (7 + 5)

回答(2):

(5+7)×(9-7)=24