（0.72*16分之11*4.8）/（25分之11*0.96*4右20分之1）（简便计算）跪求!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

刘锁兰回答：

　　[0.72*(11/16)*4.8]/[(11/25)*0.96*4右20分之1)

　　=[(72/100)*(11/16)*(48/10)]/[(11/25)*(96/100)*(81/20)]

　　除数分子与被除数分子相约

　　=[(8/100)*(1/16)*(1/10)]/[(1/25)*(2/100)*(9/20)]

　　除数分母与被除数分母相约

　　=[(8/1)*(1/16)*(1/1)]/[(1/25)*(2/1)*(9/2)]

　　=[8*(1/16)*1]/[(1/25)*2*(9/2)]

　　=（1/2）/(9/25)

　　=25/18