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2789的24点怎么算?

2*(7+9)-8=24

共有2种方法!(7+9)*2-8=24(9+7)*2-8=24

(9+7)*2-8=16*2-8=32-8=24 用四则运算算24,2.7.8.9只有一种方法算24.用加减乘除计算,就是四则运算.不可以平分、开方、阶乘等计算.扩展资料:棋牌类益智游戏,要求四个数字运算结果等于二十四,一起来玩玩吧!这个游戏用扑克牌更

1: (2 * (7 + 9)) - 82: 2 * (7 + 9) - 83: (2 * (9 + 7)) - 84: 2 * (9 + 7) - 85: (7 + 9) * 2 - 86: ((7 + 9) * 2) - 87: (9 + 7) * 2 - 88: ((9 + 7) * 2) - 8谢谢

2 7 8 9算24点的答案如下:(9+7)*2-8=24 望采纳谢谢!

(9+7)x2-8=24

2789怎么算成241: (2 * (7 + 9)) - 82: 2 * (7 + 9) - 83: (2 * (9 + 7)) - 84: 2 * (9 + 7) - 85: (7 + 9) * 2 - 86: ((7 + 9) * 2) - 87: (9 + 7) * 2 - 88: ((9 + 7) * 2) - 8

1: (2 * (7 + 9)) - 82: 2 * (7 + 9) - 83: (2 * (9 + 7)) - 84: 2 * (9 + 7) - 85: (7 + 9) * 2 - 86: ((7 + 9) * 2) - 87: (9 + 7) * 2 - 88: ((9 + 7) * 2) - 8

2*(9+7)-8=24(7+8-9-2)!=4!=242*[8+√(9+7)]=24

解:2 7 8 9=24,这样计算:(1)2x[8+√(7+9)]=242x[8+√(7+9)]=2x[8+√(16)]=2x(8+4)=2x12=24 (2)[(9+7)x2]-8=24 [(9+7)x2]-8=(16x2)-8=32-8=24

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