| Question | Answer |
| 1/12 + 3/16 | 13/48 | 5/6 + (-2/3) | 1/6 | -7/10 + 7/20 | -7/20 | -1/9 - 5/18 | -7/18 | -4/15 - 7/25 | -41/75 | 5/8 - 11/14 | -9/56 | -6/7 + (-16/21) | -1 13/21 | -1/5 - (-2/11) | -1/55 | 5 1/4 + 1 2/5 | 6 13/20 | -3 3/4 + 10 7/8 | 7 1/8 | 6 7/18 - 8 21/54 | -2 | 2 5/13 - (-1 1/2) | 3 23/26 | -4 7/10 - 9 7/15 | -14 1/6 | 3 1/2 - (-2 1/3) | 5 5/6 | -1 5/12 + 4 5/14 | 2 79/84 | 15 1/6 - 7 3/10 | 7 13/15 | d/6 + 2d/9 | 7d/18 | -y/5 + y/7 | -2y/35 | 3a/2 - a/6 | 4a/3 | -9r/11 - r/8 | -83r/88 |
