27⼀14×3⼀4-9

2025-06-24 10:39:06
推荐回答(1个)
回答1:

9/14÷(1/3×6/7-1/14)
=9/14÷(2/7-1/14)
=9/14÷(4/14-1/14)
=9/14÷3/14
=9/14×14/3
=3