七分之五加四分之一减十四分之九等于几分之几?

2024-11-21 19:59:05
推荐回答(3个)
回答1:

我写给你计算过程:
5/7+1/4-9/14
=(5/7-9/14)+1/4
=(10/14-9/14)+1/4
=1/14+1/4
=2/28+7/28
=9/28

回答2:

5/7+ 1/4- 9/14
=27/28- 18/28
=9/28

回答3:

解:5/7+1/4-9/14
=(5/7-9/14)+1/4
=(10/14-9/14)+7/4
=1/14+7/4
=2/28+49/28
=51/28