163又1/13÷41又1/39用简便计算怎么做?_数学解答

163又1/13÷41又1/39用简便计算怎么做?

人气：145 ℃　时间：2019-10-19 05:34:11

解答

163又1/13÷41又1/39
=(163x13+1)/13x39/(41x39+1)
=(163x13+1)x[3/(41x39+1)]
=2120x[3/1600]
=(53x3)/40
=159/40