4/3 x 2/9 =
1/3 + 1/4 =
1/ 5 + 2/5=
3/7 - 2/5 =
2/7 x 4/5 =
2/8 + 1/8 =
5/8 x 1/7 =
8/35
5/56
3/8
7/12
3/5
8/27
1/35
