| x | − | 1 | ÷ | x | + | 1 | ÷ | ( | 1 | − | x | ) | = | 6 | ÷ | 13 |
| 方程两边同时乘以: | x |
| x | x | − | 1 | + | 1 | ÷ | ( | 1 | − | x | ) | × | x | = | 6 | ÷ | 13 | × | x |
| 方程两边同时乘以: | ( | 1 | − | x | ) |
| x | x | ( | 1 | − | x | ) | − | 1 | ( | 1 | − | x | ) | + | 1 | x | = | 6 | ÷ | 13 | × | x | ( | 1 | − | x | ) |
| x | x | × | 1 | − | x | x | x | − | 1 | ( | 1 | − | x | ) | + | 1 | x | = | 6 | ÷ | 13 | × | x | ( | 1 | − | x | ) |
| x | x | × | 1 | − | x | x | x | − | 1 | ( | 1 | − | x | ) | + | 1 | x | = | 6 | ÷ | 13 | × | x | × | 1 | − | 6 | ÷ | 13 | × | x | x |
| x | x | × | 1 | − | x | x | x | − | 1 | ( | 1 | − | x | ) | + | 1 | x | = | 6 13 | x | − | 6 13 | x | x |
| x | x | × | 1 | − | x | x | x | − | 1 | × | 1 | + | 1 | x | + | 1 | x | = | 6 13 | x | − | 6 13 | x | x |
| x | x | × | 1 | − | x | x | x | − | 1 | + | 1 | x | + | 1 | x | = | 6 13 | x | − | 6 13 | x | x |
| x | x | × | 1 | − | x | x | x | − | 1 | + | 2 | x | = | 6 13 | x | − | 6 13 | x | x |