6.35*0.75+4.65*75%-3/4 简便运算
问题描述：
6.35*0.75+4.65*75%-3/4 简便运算
答
0.75和75%都3/4则有3/4再分配律
答
（6.35+4.65-1）*0.75＝7.5
答
6.35*0.75+4.65*75%-3/4
=6.35*0.75+4.65*0.75-0.75
=0.75*（6.35+4.65-1）
=0.75*10
=7.5