3又14/15-1又7/10-3/20=?2又2/7+(1又3/14-0.5)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 17:19:13
![3又14/15-1又7/10-3/20=?2又2/7+(1又3/14-0.5)](/uploads/image/z/1263750-6-0.jpg?t=3%E5%8F%8814%2F15-1%E5%8F%887%2F10-3%2F20%3D%3F2%E5%8F%882%2F7%2B%EF%BC%881%E5%8F%883%2F14-0.5%EF%BC%89)
3又14/15-1又7/10-3/20=?2又2/7+(1又3/14-0.5)
3又14/15-1又7/10-3/20=?2又2/7+(1又3/14-0.5)
3又14/15-1又7/10-3/20=?2又2/7+(1又3/14-0.5)
3又14/15-1又7/10-3/20
=59/15-17/10-3/20
=236/60-102/60-9/60
=(236-102-9)/60
=125/60
=25/12
2又2/7+(1又3/14-0.5)
=16/7+17/14-1/2
=32/14-17/14-7/14
=(32-17-7)/14
=8/14
=4/7