=7/9= 14/ 19
2. 1/3= 1 divided by 3=2 divided by 6.
24 12 = 2 divided by 24= 1 divided by 2.
3、 8\7 12\9
3\ 1 10\ 1
15\9 4\ 1
4 = & gt& lt
5 4/3 1 5/3
6/4 2 3/ 1
3/2 2/ 1