六年级简便方法4-9⼀15÷(5⼀9)-2⼀3简便方法及过程?

2025-04-05 15:21:30
推荐回答(1个)
回答1:

4-9/15÷(5/9)-2/3
=4-27/25-2/3
=4-(27/25+2/3)
=4-(81/75+50/75)
=4-131/75
=2又19/75