分子分母乘除法公式(分数乘除计算(分子/分母
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1,44/45*37 =(1-1/45)37 =37-37/45 =36又8/45
2,181818/218218*182182/818181 =290909/(990909)1821001/(2181001) =2/9182/218 =2/991/109 =182/981
3,105*19/18 =105(1+1/18) =105+35/6 =110又5/6
4,2/57*4又7/8 =2/5739/8 =13/76
5,2/578/39 =2/5739/8 =13/76
6,3又1/32又1/9 =10/39/19 =30/19 =1又11/19