| 10 | ÷ | ( | x | − | 10 | ) | − | ( | 1 | ÷ | 10 | ) | = | 12 | ÷ | ( | 11 10 | x | − | 12 | ) |
| 方程两边同时乘以: | ( | x | − | 10 | ) | , | ( | 11 10 | x | − | 12 | ) |
| 10 | ( | 11 10 | x | − | 12 | ) | − | ( | 1 | ÷ | 10 | ) | ( | x | − | 10 | ) | ( | 11 10 | x | − | 12 | ) | = | 12 | ( | x | − | 10 | ) |
| 10 | × | 11 10 | x | − | 10 | × | 12 | − | ( | 1 | ÷ | 10 | ) | ( | x | − | 10 | ) | ( | 11 10 | x | − | 12 | ) | = | 12 | ( | x | − | 10 | ) |
| 10 | × | 11 10 | x | − | 10 | × | 12 | − | ( | 1 | ÷ | 10 | ) | ( | x | − | 10 | ) | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 12 | × | 10 |
| 11 | x | − | 120 | − | ( | 1 | ÷ | 10 | ) | ( | x | − | 10 | ) | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
| 11 | x | − | 120 | − | 1 | ÷ | 10 | × | ( | x | − | 10 | ) | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
| 11 | x | − | 120 | − | 1 10 | ( | x | − | 10 | ) | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
| 11 | x | − | 120 | − | 1 10 | x | ( | 11 10 | x | − | 12 | ) | + | 1 10 | × | 10 | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
| 11 | x | − | 120 | − | 1 10 | x | ( | 11 10 | x | − | 12 | ) | + | 1 | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
| 11 | x | − | 120 | − | 1 10 | x | × | 11 10 | x | + | 1 10 | x | × | 12 | + | 1 | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
| 11 | x | − | 120 | − | 11 100 | x | x | + | 6 5 | x | + | 1 | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
61 5 | x | − | 120 | − | 11 100 | x | x | + | 1 | ( | 11 10 | x | − | 12 | ) | = | 12 | x | − | 120 |
61 5 | x | − | 120 | − | 11 100 | x | x | + | 1 | × | 11 10 | x | − | 1 | × | 12 | = | 12 | x | − | 120 |
61 5 | x | − | 120 | − | 11 100 | x | x | + | 11 10 | x | − | 12 | = | 12 | x | − | 120 |
133 10 | x | − | 132 | − | 11 100 | x | x | = | 12 | x | − | 120 |