3、6、7、9通过四则运算后等于24.

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3、6、7、9通过四则运算后等于24.

3、6、7、9通过四则运算后等于24.
3、6、7、9通过四则运算后等于24.

3、6、7、9通过四则运算后等于24.
3*7 9-6

亲爱的楼主:
1: 3 - (6 - 9) × 7
2: 3 - ((6 - 9) × 7)
3: 3 × (6 + 9 - 7)
4: 3 × ((6 + 9) - 7)
5: 3 × (6 + (9 - 7))
6: 3 × (6 - 7 + 9)
7: 3 × ((6 - 7) + 9)
8: 3 × (6 - ...

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亲爱的楼主:
1: 3 - (6 - 9) × 7
2: 3 - ((6 - 9) × 7)
3: 3 × (6 + 9 - 7)
4: 3 × ((6 + 9) - 7)
5: 3 × (6 + (9 - 7))
6: 3 × (6 - 7 + 9)
7: 3 × ((6 - 7) + 9)
8: 3 × (6 - (7 - 9))
9: 3 + (9 - 6) × 7
10: 3 + ((9 - 6) × 7)
11: 3 × (9 + 6 - 7)
12: 3 × ((9 + 6) - 7)
13: 3 × (9 + (6 - 7))
14: 3 × (9 - 7 + 6)
15: 3 × ((9 - 7) + 6)
16: 3 × (9 - (7 - 6))
17: 3 - (7 × (6 - 9))
18: 3 - 7 ×(6 - 9)
19: 3 × 7 - 6 + 9
祝您步步高升
期望你的采纳,谢谢

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3*7=21
9-6=3

(9-7+6)x3=24