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(1):3加3/4除以3/4加三的商除以七乘1/6除以七乘1/6...

(3+3/4除3/4+3)-(7乘1/6除7乘1/6)简算 =(3+1+3)-[(7÷7)x(1/6x1/6)] =7-(1x1/36) =7-1/36 =6又35/36

3/4;7/12;1/5

2/3-3/4×4/6+1/3÷3/7 =2/3-1/2+7/9 =1/6+7/9 =17/18

用简便方法计算 (1/27-1/36)÷1/9 =1/27÷1/9-1/36÷1/9 =1/3-1/4 =1/12 3/5×1/6+7/5÷6 =3/5×1/6+7/5×1/6 =(3/5+7/5)×1/6 =2×1/6 =1/3 7÷5×(5/7+5/28) =7/5×(5/7+5/28) =7/5×5/7+7/5×5/28 =1+1/4 =1又1/4 3/4×1/2÷3/4×2 =(3/4÷3/4)×(1/2...

1/6除以中括号9/17乘以括号3/4加2/3括号中括号 解: 1/6÷[9/17×(3/4+2/3)] =1/6÷(9/17×17/12) =1/6÷3/4 =2/9

1/2÷1/6=3, 3=[1]÷1/3, 3=[12]×1/4。

2/3除以7/4=8/21

7/10×1/6+3/10÷6 =7/60+3/10×1/6 =7/60+3/60 =10/60 =1/6

1/6除以9/17乘于3/4加2/3的和的积。 解: 1/6÷【9/17*(3/4+2/3)】 =1/6÷【9/17*(9/12+8/12)】 =1/6÷【9/17*17/12】 =1/6÷3/4 =1/6*4/3 =2/9

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