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6/7+1/4-1/6脱式计算

6/7+1/4-1/6 =72/84+21/84-14/84 =79/84

7/9-(1/6+4/9) =7/9-4/9-1/6 =1/3-1/6 =1/6

1+1/2+1/3+1/4+1/5+1/6脱式计算 =1+30/60+20/60+15/60+12/60+10/60 =1+50/60+27/60+10/60 =1+87/60 =2又9/20

4/5-1/6+1/3 =19/30+1/3 =29/30

1/4+1/6-1/8 =6/24+4/24-3/24 =7/24

(3+3/4÷3/4+3)-(7×1/6÷7x1/6) =(3+1+3)-(1/6×1/6) =7-1/36 =6又36分之35

1/6+1/5+1/2 =5/30+6/30+15/30 =11/30+15/30 =13/15

=(1+6)x6÷2 =21

5分之6-4分之1+3分之1 =60分之72-60分之15+60分之20 =60分之77

(1+99)×99/2

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