| 3 | ÷ | ( | x | − | 3 | ) | = | 1 | − | ( | 3 | x | ÷ | ( | 3 | − | x | ) | ) |
| 方程两边同时乘以: | ( | x | − | 3 | ) |
| 3 | = | 1 | ( | x | − | 3 | ) | − | ( | 3 | x | ÷ | ( | 3 | − | x | ) | ) | ( | x | − | 3 | ) |
| 3 | = | 1 | x | − | 1 | × | 3 | − | ( | 3 | x | ÷ | ( | 3 | − | x | ) | ) | ( | x | − | 3 | ) |
| 3 | = | 1 | x | − | 3 | − | ( | 3 | x | ÷ | ( | 3 | − | x | ) | ) | ( | x | − | 3 | ) |
| 3 | = | 1 | x | − | 3 | − | 3 | x | ÷ | ( | 3 | − | x | ) | × | ( | x | − | 3 | ) |
| 方程两边同时乘以: | ( | 3 | − | x | ) |
| 3 | ( | 3 | − | x | ) | = | 1 | x | ( | 3 | − | x | ) | − | 3 | ( | 3 | − | x | ) | − | 3 | x | ( | x | − | 3 | ) |
| 3 | × | 3 | − | 3 | x | = | 1 | x | ( | 3 | − | x | ) | − | 3 | ( | 3 | − | x | ) | − | 3 | x | ( | x | − | 3 | ) |
| 3 | × | 3 | − | 3 | x | = | 1 | x | × | 3 | − | 1 | x | x | − | 3 | ( | 3 | − | x | ) | − | 3 | x | ( | x | − | 3 | ) |
| 9 | − | 3 | x | = | 3 | x | − | 1 | x | x | − | 3 | ( | 3 | − | x | ) | − | 3 | x | ( | x | − | 3 | ) |
| 9 | − | 3 | x | = | 3 | x | − | 1 | x | x | − | 3 | × | 3 | + | 3 | x | − | 3 | x | ( | x | − | 3 | ) |
| 9 | − | 3 | x | = | 3 | x | − | 1 | x | x | − | 9 | + | 3 | x | − | 3 | x | ( | x | − | 3 | ) |
| 9 | − | 3 | x | = | 6 | x | − | 1 | x | x | − | 9 | − | 3 | x | ( | x | − | 3 | ) |
| 9 | − | 3 | x | = | 6 | x | − | 1 | x | x | − | 9 | − | 3 | x | x | + | 3 | x | × | 3 |
| 9 | − | 3 | x | = | 6 | x | − | 1 | x | x | − | 9 | − | 3 | x | x | + | 9 | x |
| 9 | − | 3 | x | = | 15 | x | − | 1 | x | x | − | 9 | − | 3 | x | x |
| x1= | 3 2 |