100x括号1⼀2-1⼀4-1⼀5括住。能简算吗?

2025-06-27 14:08:47
推荐回答(1个)
回答1:

100×(1/2-1/4-1/5)
=100×1/2-100×1/4-100×1/5
=50-25-20
=25-20
=5