15⼀7 - (9⼀2 - 6⼀7) + 5⼀2的计算过程?

2024-12-02 07:49:03
推荐回答(1个)
回答1:

=15/7-9/2+6/7+5/2
=15/7+6/7-(9/2-5/2)
=21/7-4/2
=3-2
=1