行行好,数学题“(9又2/7+7又2/9)÷(5/7+5/9)怎么做啊,简便计算,
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 19:14:34
![行行好,数学题“(9又2/7+7又2/9)÷(5/7+5/9)怎么做啊,简便计算,](/uploads/image/z/13313381-5-1.jpg?t=%E8%A1%8C%E8%A1%8C%E5%A5%BD%2C%E6%95%B0%E5%AD%A6%E9%A2%98%E2%80%9C%EF%BC%889%E5%8F%882%2F7%2B7%E5%8F%882%2F9%EF%BC%89%C3%B7%EF%BC%885%2F7%2B5%2F9%EF%BC%89%E6%80%8E%E4%B9%88%E5%81%9A%E5%95%8A%2C%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%2C)
行行好,数学题“(9又2/7+7又2/9)÷(5/7+5/9)怎么做啊,简便计算,
行行好,数学题“(9又2/7+7又2/9)÷(5/7+5/9)怎么做啊,简便计算,
行行好,数学题“(9又2/7+7又2/9)÷(5/7+5/9)怎么做啊,简便计算,
(585/63+455/63)÷(45/63+35/63)
=(1040/63)÷(80/63)
=(1040/63)×(63/80)
=1040/80
=13