3/5/[(1/5+1/3)/2/9]详解
问题描述:
3/5/[(1/5+1/3)/2/9]详解
答
3/5/[(1/5+1/3)/2/9]
=3/5/(8/15x9/2)
=3/5÷12/5
=3/12
=1/4