| 600 | x | ÷ | ( | x | − | 600 | ) | = | 213 50 |
| 方程两边同时乘以: | ( | x | − | 600 | ) |
| 600 | x | = | 213 50 | ( | x | − | 600 | ) |
| 600 | x | = | 213 50 | x | − | 213 50 | × | 600 |
| 600 | x | = | 213 50 | x | − | 2556 |
| 600 | x | − | 213 50 | x | = | - | 2556 |
29787 50 | x | = | - | 2556 |
| x | = | - | 2556 | ÷ | 29787 50 |
| = | - | 2556 | × | 50 29787 |
| = | - | 852 | × | 50 9929 |
| x | = | - | 42600 9929 |
| x | = | - 4.290462 |