8⼀7-小括号2⼀3+2⼀5等于多少?

2024-12-26 17:31:06
推荐回答(2个)
回答1:

8/7-(2/3+2/5)
=8/7-16/15
=8/105

回答2:

8/7-(2/3+2/5)
=8/7-(10/15+6/15)
=8/7-16/15
=120/105-112/105
=8/105