39x7/8简便？
发布网友
发布时间：2022-04-22 09:42
共3个回答
热心网友
时间：2023-09-18 02:08
(2/7+3/8)×5.6
=(2/7+3/8)×56/10
=2/7×56/10+3/8×56/10
=16/10+21/10
=37/10
=3又7/10
5/6×17+5/6
=5/6×(17+1)
=5/6×18
=15
25×7/8
=175/8
=21又7/8
7/9×14/13+11/9×14/13
=14/13×(7/9+11/9)
=14/13×2
=28/13
=2又2/13
热心网友
时间：2023-09-18 02:08
25x7/8
=（24+1）x7/8
=24x7/8+7/8
=21+7/8
=21又7/8
5/6x17+5/6
=5/6x（17+1）
=5/6x18
=15
7/9x14/13+11/9x14/13
=（7/9+11/9）x14/13
=2x14/13
=28/13
=2又2/13
热心网友
时间：2023-09-18 02:09
你也是够了，单纯的乘法加化简而已追问我脑路不行，你管我～
