用数字算24点用2,7,8,9算出24点,不能重复

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用数字算24点用2,7,8,9算出24点,不能重复
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用数字算24点用2,7,8,9算出24点,不能重复
用数字算24点
用2,7,8,9算出24点,不能重复

用数字算24点用2,7,8,9算出24点,不能重复
1:(2 × (7 + 9)) - 8
2:2 × (7 + 9) - 8
3:(2 × (9 + 7)) - 8
4:2 × (9 + 7) - 8
5:(7 + 9) × 2 - 8
6:((7 + 9) × 2) - 8
7:(9 + 7) × 2 - 8
8:((9 + 7) × 2) - 8

([(2+7)×9]¼)×8
2加7然后成9然后开四次方,再乘以8,得解~~

1: (2 × (7 + 9)) - 8
2: 2 × (7 + 9) - 8
3: (2 × (9 + 7)) - 8
4: 2 × (9 + 7) - 8
5: (7 + 9) × 2 - 8
6: ((7 + 9) × 2) - 8
7: (9 + 7) × 2 - 8
8: ((9 + 7) × 2) - 8

(9+7)*2-8