二分之一减括号四分之三减八分之三1⼀2减括号,3⼀4-3⼀8,括号能用简便方法计算吗1803571?

2024-12-02 08:13:24
推荐回答(2个)
回答1:

1/2一(3/4一3/8)
=1/2-3/8
=4/8一3/8
=l/8

回答2:

1/2-(3/4-3/8)
=1/2-(6/8-3/8)
=1/2-3/8
=4/8-3/8
=1/8
括号里通分即可