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2 8 9 7算24怎么算

你好!24点游戏题目【2,7,8,9】共有3种算法 1. [2×﹙9+7﹚]-8 2. [﹙9+7﹚×2]-8 3. [2×﹙7+9﹚]-8

2, 7, 8, 9的24点答案: 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

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

你好 这样可以得到:[2×(9+7)]-8

(2*(7+9))-8 (2*(9+7))-8 ((7+9)*2)-8 ((9+7)*2)-8

8+8x(9-7) =8+8x2 =8+16 =24; 8-8x(7-9) =8-8x(-2) =8-(-16) =24; …… 供参考。

只有一种算法:2×(9+7)-8=24 有其他算法也可通过交换法变换而得,如(7+9)×2-8=24

(9+7)x2-8=24 2x(9+7)-8=24 希望帮到你 望采纳 谢谢 加油

1: 8 × (9 ÷ (10 - 7)) 2: 8 × 9 ÷(10 - 7) 3: (8 × 9) ÷ (10 - 7) 4: (8 ÷ (10 - 7)) × 9 5: 8 ÷ (10 - 7) × 9 6: 8 ÷ ((10 - 7) ÷ 9) 7: 9 × (8 ÷ (10 - 7)) 8: 9 × 8 ÷(10 - 7) 9: (9 × 8) ÷ (10 - 7) 10: (9 ÷ (10 - 7)) × 8 11: 9 ÷ (10 - ...

10减去9,再加上2,再乘以8,最后得到24喽

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