(23.4+18.6)÷(23.4-18.6)的简便计算!%>_
问题描述:
(23.4+18.6)÷(23.4-18.6)的简便计算!%>_
答
(23.4+18.6)÷(23.4-18.6)
=42÷4.8
=8.57