脱式计算:(4/5-7/25)除[1/4-20%(1+25%)+2%] (求计算过程)
问题描述:
脱式计算:(4/5-7/25)除[1/4-20%(1+25%)+2%] (求计算过程)
答
(4/5-7/25)/[1/4-20%(1+25%)+2%]
=(20/25-7/25)/[1/4-(1/5)*(5/4)+2%]
=(13/25)/(1/4-1/4+1/50)
=(13/25)/(1/50)
=(13/25)*50
=26