通分 5⼀6和7⼀8 3⼀7和2⼀9 5⼀13,15⼀26和49⼀78

2024-12-23 13:01:57
推荐回答(1个)
回答1:

5/6和7/8
5/6=20/24
7/8=21/24
3/7和2/9
3/7=27/63
2/9=14/63
5/13,15/26和49/78
5/13=30/78

15/26=45/78
49/78=49/78