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7/1十7/5除以6/5

7/1十7/5÷6/5 =7+7/5x5/6 =7+7/6 =8+1/6 ≈8+0.167 =8.167

6/5*6/7-1/5÷7/6 =6/5*6/7-1/5*6/7 =(6/5-1/5)*6/7 =1*6/7 =6/7

1/7+5/7÷6/7+5/12 =1/7+5/7x7/6+5/12 =1/7+5/6+5/12 =12/84+70/84+35/84 =117/84 =39/28

1/7十5/6 =6/42+35/42 =41/42

一又2/7除以(6/5) =9/7÷6/5 =15/14 -------------------------------

7/6×括号1/6-1/3括号乘3/14÷(3/5) =7/6x(-1/3)x3/14x5/3 =-7/18x3/14x5/3 =-1/12x5/3 =-5/36

(1)5/7+5/6+2/7+1/6 =5/7+2/7+5/6+1/6=2 (2)1/15x(1/3+1/12)=1/15x5/12=1/36 (3)1/3+3除以1/2 (4)3.7乘以6/5+1.3除以5/6 (5)1/4除以3-5/13-8/13) (6)0.5乘以(3/5+6/25)

= (64+8/7)÷8/7 = 64÷8/7+8/7÷8/7 = 56+1 = 57 = (36+6/5)÷6/5 = 36÷6/5+6/5÷6/5 = 30+1 = 31 2013÷(2013+2013/2014) = 1÷(1+1/2014) = 1÷2015/2014 = 2014/2015 1/3535÷1/5353 = 1/(35*101)÷1/(53*101) = 1/35÷1/53 = 53/35

第一题,相当于3/5*10*1/6约分可得答案为1,第二题,先算5/6*/5=1/3,则为7/8除1/3即为乘三答案21/8

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