3又1⼀3-(1又5⼀7+1⼀8÷1又3⼀4)×1又2⼀5=

2024-11-23 07:02:24
推荐回答(1个)
回答1:

=4/3-(12/7+1/8÷7/4)*7/5
=4/3-5/2
=-7/6