4⼀5×3⼀4-2⼀5的差的底除以5-8⼀15,应该怎么简便计算?

2025-06-21 03:01:28
推荐回答(1个)
回答1:

(4/5*3/4-2/5)/(5-8/15)
=(3/5-2/5)/(5*15-8)/15
=1/5/(67/15)
=3/67