3⼀20-3⼀4+7⼀20怎么计算?

2025-03-24 18:18:06
推荐回答(2个)
回答1:

3/20-3/4+7/20
=3/20-15/20+7/20
=-12/20+7/20
=-5/20
=-1/4
希望能够帮到你,还望采纳谢谢!

回答2:

3/20-15/20+7/20
=3/20+7/20-15/20
=10/20-15/20
=-1/4