76-(68-23)怎么用简便方法做?

2024-12-02 07:42:00
推荐回答(2个)
回答1:

76-(68-23)怎么用简便方法做?
=76+23-68
=99-68
=31

回答2:

原式=76-68+23
=76+23-68
=99-68
=31