423*9/25*15/4-14/5*0.423*125
问题描述:
423*9/25*15/4-14/5*0.423*125
答
原式=423*(9/25*15/4-14/5*1/1000*125)
=423*(135/100-14/5*1/8)
=423*(135/100-35/100)
=423*100/100
=423