(1/24+2/71)×21+29/71怎么用简便方法计算? 日期:2021-08-25 09:38:34 人气:1 (1/24+2/71)×21+29/71怎么用简便方法计算? 21/24+42/71+29/71 =21/24+71/71 =7/8+1 =1又7/8