14又3∕4*28-14又3∕4*8
问题描述：
14又3∕4*28-14又3∕4*8
答
方法一：(14又3∕4)*28-(14又3∕4)*8
=(14又3∕4)*(28-8)
=(14+3∕4)*20
=14*20+3/4*20
=280+15
=295
方法二：(14又3∕4)*28-(14又3∕4)*8
=(14又3∕4)*(28-8)
=(14+3∕4)*20
=（56/4+3/4）*20
=59/4*20
=59*5
=295