用脱式计算:5⼀12-7⼀18

要离是述式
2024-11-28 21:45:02
推荐回答(2个)
回答1:

5/12-7/18=15/36-14/36=1/36

回答2:

5/12-7/18
=90/216-84/216
=6/216
=1/36