1/2 = 18×1 18×2 =18/36
3/4 = 3×9 4×9 = 27/36
5/6 = 5×6 6×6 =30/36
7/9 = 7×4 9×4 = 28/36
11/12 = 11×3 12×3 = 33/36
17/18 = 17×2 18×2 = 34/36
1/2= 1×21 2×21 = 21/42
2/3 = 2×14 3×14 =28/42
4/7 = 4×6 7×6 = 24/42
5/14 = 5×3 14×3 = 15/42
8/21 = 8×2 21×2 =16/42
1/6 = 1×7 6×7 =7/42
3/8= 3×7 8×7 = 21/56
5/7 = 5×8 7×8 = 40/56
1/4= 1×14 4×14 = 14/56
1/14 = 1×4 14×4 = 4/56
13/28 = 13×2 28×2 =26/56
4/8 = 4×9 8×9 =36/72
2/9 = 2×8 9×8 = 16/72
1/6 = 1 × 12 6 × 12 =12/72
5/12 = 5×6 12×6 =30/72
11/18 = 11×4 18×4 =44/72
7/36 = 7×2 36×2 = 14/72