| 2400 | ÷ | x | × | ( | 1 | − | 1 | ÷ | ( | 1 | − | x | ) | ) | = | 150000 |
| 方程两边同时乘以: | x |
| 2400 | ( | 1 | − | 1 | ÷ | ( | 1 | − | x | ) | ) | = | 150000 | x |
| 2400 | × | 1 | − | 2400 | × | 1 | ÷ | ( | 1 | − | x | ) | = | 150000 | x |
| 2400 | − | 2400 | ÷ | ( | 1 | − | x | ) | = | 150000 | x |
| 方程两边同时乘以: | ( | 1 | − | x | ) |
| 2400 | ( | 1 | − | x | ) | − | 2400 | = | 150000 | x | ( | 1 | − | x | ) |
| 2400 | × | 1 | − | 2400 | x | − | 2400 | = | 150000 | x | ( | 1 | − | x | ) |
| 2400 | × | 1 | − | 2400 | x | − | 2400 | = | 150000 | x | × | 1 | − | 150000 | x | x |
| 2400 | − | 2400 | x | − | 2400 | = | 150000 | x | − | 150000 | x | x |
| 0 | − | 2400 | x | = | 150000 | x | − | 150000 | x | x |