8⼀7-(2⼀1+16⼀3)等于多少用分数?

2024-12-25 22:47:41
推荐回答(1个)
回答1:

=8/7-(6/3+16/3)
=8/7-19/3
=24/21-19*7/21
=(24-19*7)/21
=(24-133)/21
=109/21