| 1 | ÷ | d | + | 1 | ÷ | ( | d | − | 3 | ) | + | 1 | ÷ | ( | d | − | 2 | ) | = | 1 | ÷ | ( | d | − | 1 | ) |
| 方程两边同时乘以: | d | , | ( | d | − | 1 | ) |
| 1 | ( | d | − | 1 | ) | + | 1 | ÷ | ( | d | − | 3 | ) | × | d | ( | d | − | 1 | ) | + | 1 | ÷ | ( | d | − | 2 | ) | × | d | ( | d | − | 1 | ) | = | 1 | d |
| 1 | d | − | 1 | × | 1 | + | 1 | ÷ | ( | d | − | 3 | ) | × | d | ( | d | − | 1 | ) | + | 1 | ÷ | ( | d | − | 2 | ) | × | d | ( | d | − | 1 | ) | = | 1 | d |
| 1 | d | − | 1 | + | 1 | ÷ | ( | d | − | 3 | ) | × | d | ( | d | − | 1 | ) | + | 1 | ÷ | ( | d | − | 2 | ) | × | d | ( | d | − | 1 | ) | = | 1 | d |
| 方程两边同时乘以: | ( | d | − | 3 | ) |
| 1 | d | ( | d | − | 3 | ) | − | 1 | ( | d | − | 3 | ) | + | 1 | d | ( | d | − | 1 | ) | + | 1 | ÷ | ( | d | − | 2 | ) | × | d | ( | d | − | 1 | ) | = | 1 | d | ( | d | − | 3 | ) |
| 1 | d | d | − | 1 | d | × | 3 | − | 1 | ( | d | − | 3 | ) | + | 1 | d | ( | d | − | 1 | ) | + | 1 | = | 1 | d | ( | d | − | 3 | ) |
| 1 | d | d | − | 1 | d | × | 3 | − | 1 | ( | d | − | 3 | ) | + | 1 | d | ( | d | − | 1 | ) | + | 1 | = | 1 | d | d | − | 1 | d | × | 3 |
| 1 | d | d | − | 3 | d | − | 1 | ( | d | − | 3 | ) | + | 1 | d | ( | d | − | 1 | ) | + | 1 | ÷ | ( | d | − | 2 | ) | = | 1 | d | d | − | 3 | d |
| 方程两边同时乘以: | ( | d | − | 2 | ) |
| 1 | d | d | ( | d | − | 2 | ) | − | 3 | d | ( | d | − | 2 | ) | − | 1 | ( | d | − | 3 | ) | ( | d | − | 2 | ) | + | 1 | d | = | 1 | d | d | ( | d | − | 2 | ) | − | 3 | d | ( | d | − | 2 | ) |
| 1 | d | d | d | − | 1 | d | d | × | 2 | − | 3 | d | ( | d | − | 2 | ) | − | 1 | = | 1 | d | d | ( | d | − | 2 | ) | − | 3 | d | ( | d | − | 2 | ) |
| 1 | d | d | d | − | 1 | d | d | × | 2 | − | 3 | d | ( | d | − | 2 | ) | − | 1 | = | 1 | d | d | d | − | 1 | d | d | × | 2 | − | 3 | d | ( | d | − | 2 | ) |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | ( | d | − | 2 | ) | − | 1 | ( | d | − | 3 | ) | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | ( | d | − | 2 | ) |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 3 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | ( | d | − | 2 | ) |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 3 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 3 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 8 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 8 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 8 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |
| 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 11 | d | = | 1 | d | d | d | − | 2 | d | d | − | 3 | d | d | + | 6 | d |