15/12 - 2/3 = 15 1 / 12 1 - 2 4 / 3 4 = 15 / 12 - 8 / 12 = (15 - 8) / 12 = 7 / 12
1/2 - 3/10 = 1 5 / 2 5 - 3 / 10 * 2 = 5 / 10 - 6 / 10 = (5 - 6) / 10 = -1 / 10
13/16 - 3/8 = 13 2 / 16 2 - 3 2 / 8 2 = 26 / 32 - 6 / 16 = (26 - 6) / 32 = 20 / 32 = 5 / 8
27/11 - 27/55 = 27 5 / 11 5 - 27 / 55 * 1 = 135 / 55 - 27 / 55 = (135 - 27) / 55 = 108 / 55
15/12 - 2/3 = 15 1 / 12 1 - 2 4 / 3 4 = 15 / 12 - 8 / 12 = (15 - 8) / 12 = 7 / 12
1/2 - 3/10 = 1 5 / 2 5 - 3 / 10 * 2 = 5 / 10 - 6 / 10 = (5 - 6) / 10 = -1 / 10
13/16 - 3/8 = 13 2 / 16 2 - 3 2 / 8 2 = 26 / 32 - 6 / 16 = (26 - 6) / 32 = 20 / 32 = 5 / 8
27/11 - 27/55 = 27 5 / 11 5 - 27 / 55 * 1 = 135 / 55 - 27 / 55 = (135 - 27) / 55 = 108 / 55