| x | ÷ | x | − | 1 | − | 3 | ÷ | ( | x | − | 1 | ) | × | ( | x | + | 2 | ) | = | 1 |
| 方程两边同时乘以: | x |
| x | − | 1 | x | − | 3 | ÷ | ( | x | − | 1 | ) | × | ( | x | + | 2 | ) | x | = | 1 | x |
| x | − | 1 | x | − | 3 | ÷ | ( | x | − | 1 | ) | × | x | x | − | 3 | ÷ | ( | x | − | 1 | ) | × | 2 | x | = | 1 | x |
| x | − | 1 | x | − | 3 | ÷ | ( | x | − | 1 | ) | × | x | x | − | 6 | ÷ | ( | x | − | 1 | ) | × | x | = | 1 | x |
| 0 | x | − | 3 | ÷ | ( | x | − | 1 | ) | × | x | x | − | 6 | ÷ | ( | x | − | 1 | ) | × | x | = | 1 | x |
| 方程两边同时乘以: | ( | x | − | 1 | ) |
| 0 | x | − | 3 | x | x | − | 6 | x | = | 1 | x | ( | x | − | 1 | ) |
| 0 | x | − | 3 | x | x | − | 6 | x | = | 1 | x | x | − | 1 | x | × | 1 |
| 0 | x | − | 3 | x | x | − | 6 | x | = | 1 | x | x | − | 1 | x |
| - | 6 | x | − | 3 | x | x | = | 1 | x | x | − | 1 | x |
| x1= | - | 5 4 |