| ( | 1 | ÷ | x | ) | + | ( | 2 | ÷ | ( | x | − | 1 | ) | × | 2 | ) | = | 0 |
| 1 | ÷ | x | + | ( | 2 | ÷ | ( | x | − | 1 | ) | × | 2 | ) | = | 0 |
| 方程两边同时乘以: | x |
| 1 | + | ( | 2 | ÷ | ( | x | − | 1 | ) | × | 2 | ) | x | = | 0 |
| 1 | + | 2 | ÷ | ( | x | − | 1 | ) | × | 2 | x | = | 0 |
| 1 | + | 4 | ÷ | ( | x | − | 1 | ) | × | x | = | 0 |
| 方程两边同时乘以: | ( | x | − | 1 | ) |
| 1 | ( | x | − | 1 | ) | + | 4 | x | = | 0 |
| 1 | x | − | 1 | × | 1 | + | 4 | x | = | 0 |
| 1 | x | − | 1 | + | 4 | x | = | 0 |
| 5 | x | − | 1 | = | 0 |
| 5 | x | = | 0 | + | 1 |
| 5 | x | = | 1 |
| x | = | 1 | ÷ | 5 |
| = | 1 | × | 1 5 |
| x | = | 1 5 |
| x | = | 0.2 |