Question

15分之7:25分之21化简 9分之3.6化简 【2:4分之3 9分之7:3分之2 求比值】

Answer 1

15分之7:25分之21=70:126=5/9;
化简 9分之3.6=3.6/9=0.4=4/10=2/5;
化简 【2:4分之3
=8:3;
=8/3;
9分之7:3分之2
=7/9:2/3
=21/18
=7/6;