(+3又1/7)*(3又1/7-7又1/3)*7/22*21/22
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 21:00:14
![(+3又1/7)*(3又1/7-7又1/3)*7/22*21/22](/uploads/image/z/1839113-17-3.jpg?t=%EF%BC%88%2B3%E5%8F%881%2F7%EF%BC%89%2A%EF%BC%883%E5%8F%881%2F7-7%E5%8F%881%2F3%EF%BC%89%2A7%2F22%2A21%2F22)
(+3又1/7)*(3又1/7-7又1/3)*7/22*21/22
(+3又1/7)*(3又1/7-7又1/3)*7/22*21/22
(+3又1/7)*(3又1/7-7又1/3)*7/22*21/22
(+3又1/7)*(3又1/7-7又1/3)*7/22*21/22
=(22/7*7/22)*(3又1/7-7又1/3)*21/22
=(22/7-22/3)*21/22
=22/7*21/22-22/3*21/22
=3-7
=-4