7份之3:21份之5化简比

问题描述:

7份之3:21份之5化简比

9\5过程(3/7):(5/21) =3/7 x 21/5 =9/5(3/7):(5/21) =3/7 x 21/5 =9/5 =9:51.4:3份之28化简比1.4:3份之28 =1.4*3\28 =3\20 =3:20