能简算的简算 15/17-(10/17-1/2)=?
问题描述:
能简算的简算 15/17-(10/17-1/2)=?
答
15/17-(10/17-1/2)
=15/17-10/17+1/2
=5/17+1/2=10/34+17/34
=27/34