A fraction of equal value
| 12 x 2 | |
| 13 x 2 |
| = |
| 24 |
| 26 |
| 12 x 3 | |
| 13 x 3 |
| = |
| 36 |
| 39 |
| 12 x 4 | |
| 13 x 4 |
| = |
| 48 |
| 52 |
| 12 x 5 | |
| 13 x 5 |
| = |
| 60 |
| 65 |
| 12 x 6 | |
| 13 x 6 |
| = |
| 72 |
| 78 |
| 12 x 7 | |
| 13 x 7 |
| = |
| 84 |
| 91 |
| 12 x 8 | |
| 13 x 8 |
| = |
| 96 |
| 104 |
| 12 x 9 | |
| 13 x 9 |
| = |
| 108 |
| 117 |
| 12 x 10 | |
| 13 x 10 |
| = |
| 120 |
| 130 |
| 12 x 11 | |
| 13 x 11 |
| = |
| 132 |
| 143 |
| 12 x 12 | |
| 13 x 12 |
| = |
| 144 |
| 156 |
| 12 x 13 | |
| 13 x 13 |
| = |
| 156 |
| 169 |
| 12 x 14 | |
| 13 x 14 |
| = |
| 168 |
| 182 |
| 12 x 15 | |
| 13 x 15 |
| = |
| 180 |
| 195 |
| 12 x 16 | |
| 13 x 16 |
| = |
| 192 |
| 208 |
| 12 x 17 | |
| 13 x 17 |
| = |
| 204 |
| 221 |
| 12 x 18 | |
| 13 x 18 |
| = |
| 216 |
| 234 |
| 12 x 19 | |
| 13 x 19 |
| = |
| 228 |
| 247 |
| 12 x 20 | |
| 13 x 20 |
| = |
| 240 |
| 260 |