一道简便运算
问题描述:
一道简便运算
4×60%+25分之19×40%+25分之19×60%
=
=
19÷5分之3÷19%
=
=
答
4×60%+19/25×40%+19/25×60%
=4×60%+19/25(40%+60%)
=4×60%+19/25
=24/10+19/25
=79/25
19÷3/5÷19%
=19×5/3×100/19
=500/3
额 累死我了