8.19-(3.19 2.9)的简便运算?

2025-03-10 22:12:09
推荐回答(1个)
回答1:

8.19-(3.19+2.9)的简便运算
8.19-(3.19+2.9)
=8.19-3.19-2.9
=5-2.9
=2.1