求解,采纳

2025-05-14 00:32:32
推荐回答(1个)
回答1:

简算
4.57x1.2-4.57x0.2
=4.57x(1.2-0.2)
=4.57
62.3÷(62.3÷0.8)
=62.3÷62.3x0.8
=0.8