6⼀7+6⼀7×7⼀2+6⼀7×5⼀2简便方法?

2024-12-03 22:43:06
推荐回答(1个)
回答1:

6/7+6/7×7/2+6/7×5/2
=6/7×(1+7/2+5/2)
=6/7×7
=6