12分之5减【3分之1减(6分之1加12分之一】 用简便计算

2024-12-02 08:02:32
推荐回答(1个)
回答1:

5/12 - [1/3 - (1/6 + 1/12)]

=5/12 - [1/3 - (2/12+1/12)]

=5/12-[1/3-1/4]

=5/12-1/12

=1/3