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24×5/6减12/7的差,脱式计算

=20-12/7 =18又2/

5/6-7/12+3/4 =20/24-14/24+18/24 =24/24 =1

化小数为分数: 12/7×0.6 =12/7×3/5 =36/35 =1又1/35。

24×(7/12-1/4) =24×7/12-24×1/4 =14-6 =8

7/15×12/21×5/6的脱式过程. 7/15×12/21×5/6 =1/3×2/3 =2...

=7/8-5/12+1/6 =42/48-20/48+8/48 =30/48 =5/8

7/9+5/12-1/4 =28/36+15/36-9/36 =34/36 =17/18 =...

(7/85/6)/(5/12) =(21/2420/24)*(12/5) =(1/24)*(12...

原式 =(12分之5+12分之11+12分之7)-15分之6 =12分之23-5分之2 =60...

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