9⼀14-括号5⼀21+5⼀14括号等于多少

9/14-括号5/21+5/14括号等于多少
2025-06-28 12:50:16
推荐回答(2个)
回答1:

9/14-(5/21+5/14)
=9/14-5/14-5/21
=2/7-5/21
=1/21

回答2:

=9/14-5/21-5/14
=9/14-5/14-5/21
=4/14-5/21
=12/42-10/42
=2/42
=1/21