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(1/2+1/3)÷2/5%2/3 脱式计算,简便计算. 我会给好...

无简单方法

5/6-1/2+1/3 =5/6-3/6+2/6 =4/6 =2/3

脱式计算,能简便的简便: 1/3÷[(1/3+1/7)×2] = 1/3÷[10/21×2] = 1/3÷20/21 =7/20

1/2+2/3×括号3/4-1/6。脱式计算 解:采用分配律, 原式=1/2+2/3x(3/4-1/6) =1/2+2/3x3/4-2/3x1/6 =1/2+1/2-1/9 =1-1/9 =8/9

5/9

{2一(1/2+3/4)}÷1/8 =(2-5/4)÷1/8 =3/4÷1/8 =6

(2/3+75%)÷(2-1/2) =(2/3+3/4)÷3/2 =(8/12+9/12)×2/3 =17/12×2/3 =17/18 596-720÷(15×12) =596-720÷12÷15 =596-60÷15 =596-4 =592

red

先彩钠如何,我帮你解提这边谢谢。

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