| 2 | x | ÷ | ( | 200000 | ( | 1 | + | x | ÷ | 200000 | ) | ) | = | 9 100 |
| 方程两边同时乘以: | ( | 200000 | ( | 1 | + | x | ÷ | 200000 | ) | ) |
| 2 | x | = | 9 100 | ( | 200000 | ( | 1 | + | x | ÷ | 200000 | ) | ) |
| 2 | x | = | 9 100 | × | 200000 | ( | 1 | + | x | ÷ | 200000 | ) |
| 2 | x | = | 18000 | ( | 1 | + | x | ÷ | 200000 | ) |
| 2 | x | = | 18000 | × | 1 | + | 18000 | x | ÷ | 200000 |
| 2 | x | = | 18000 | + | 9 100 | x |
| 2 | x | − | 9 100 | x | = | 18000 |
191 100 | x | = | 18000 |
| x | = | 18000 | ÷ | 191 100 |
| = | 18000 | × | 100 191 |
| x | = | 1800000 191 |
| x | = | 9424.08377 |