二又3⼀5+1⼀4-3⼀20等于多少?

2025-06-20 07:51:54
推荐回答(1个)
回答1:

2又3/5+1/4-3/20=13/5+1/4-3/20
=(13×4+5-3)/20=54/20=27/10
=2又7/10