简便计算要有详细的过程通分过程也要写出来

2025-03-10 05:40:16
推荐回答(1个)
回答1:

4/5-(13/16-5/16)+3/4
=4/5-1/2+3/4
=16/20-10/20+5/20
=(16-10+5)/20
=11/20