5⼀7-(1⼀14+7⼀28) 脱式计算

2024-12-03 18:43:05
推荐回答(3个)
回答1:

5/7-(1/14+7/28)
=5/7-9/28
=11/28

回答2:

=5/7-(2/28+7/28)
=20/28-9/28
=11/28

回答3:

11/28