(+2又31/8)*(-1又7/2)*(+2又15/1)*(-4又2/1)简便算法(+2又8/31)*(-1又2/7)*(+2有1/15)*(-4又1/2)的简便算法
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/28 17:32:42
![(+2又31/8)*(-1又7/2)*(+2又15/1)*(-4又2/1)简便算法(+2又8/31)*(-1又2/7)*(+2有1/15)*(-4又1/2)的简便算法](/uploads/image/z/604708-52-8.jpg?t=%28%2B2%E5%8F%8831%2F8%29%2A%28-1%E5%8F%887%2F2%29%2A%28%2B2%E5%8F%8815%2F1%29%2A%28-4%E5%8F%882%2F1%29%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95%28%2B2%E5%8F%888%2F31%EF%BC%89%2A%EF%BC%88-1%E5%8F%882%2F7%EF%BC%89%2A%EF%BC%88%2B2%E6%9C%891%2F15%EF%BC%89%2A%EF%BC%88-4%E5%8F%881%2F2%EF%BC%89%E7%9A%84%E7%AE%80%E4%BE%BF%E7%AE%97%E6%B3%95)
(+2又31/8)*(-1又7/2)*(+2又15/1)*(-4又2/1)简便算法(+2又8/31)*(-1又2/7)*(+2有1/15)*(-4又1/2)的简便算法
(+2又31/8)*(-1又7/2)*(+2又15/1)*(-4又2/1)简便算法
(+2又8/31)*(-1又2/7)*(+2有1/15)*(-4又1/2)的简便算法
(+2又31/8)*(-1又7/2)*(+2又15/1)*(-4又2/1)简便算法(+2又8/31)*(-1又2/7)*(+2有1/15)*(-4又1/2)的简便算法
=(31/70*15/31)*(7/9*4/9)
=3/14*28/81
=2/27
=13又2/1
=(31/70*15/31)*(7/9*4/9)
=3/14*28/81
=2/27
=13又2/1
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