用简便方法计算.5/42/(5/8+5/6)
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/23 06:46:18
用简便方法计算.5/42/(5/8+5/6)用简便方法计算.5/42/(5/8+5/6)用简便方法计算.5/42/(5/8+5/6)5/42/(5/8+5/6)=1/42/(1/8+1/6)=1/21
用简便方法计算.5/42/(5/8+5/6)
用简便方法计算.5/42/(5/8+5/6)
用简便方法计算.5/42/(5/8+5/6)
5/42/(5/8+5/6)
=1/42/(1/8+1/6)
=1/21/(1/4+1/3)
=1/21/(7/12)
=1/21*12/7
=4/49