| 12 | ÷ | x | + | 12 | ÷ | ( | x | − | 1500 | ) | = | 102000 |
| 方程两边同时乘以: | x |
| 12 | + | 12 | ÷ | ( | x | − | 1500 | ) | × | x | = | 102000 | x |
| 方程两边同时乘以: | ( | x | − | 1500 | ) |
| 12 | ( | x | − | 1500 | ) | + | 12 | x | = | 102000 | x | ( | x | − | 1500 | ) |
| 12 | x | − | 12 | × | 1500 | + | 12 | x | = | 102000 | x | ( | x | − | 1500 | ) |
| 12 | x | − | 12 | × | 1500 | + | 12 | x | = | 102000 | x | x | − | 102000 | x | × | 1500 |
| 12 | x | − | 18000 | + | 12 | x | = | 102000 | x | x | − | 153000000 | x |
| 24 | x | − | 18000 | = | 102000 | x | x | − | 153000000 | x |