| 3000 | ÷ | x | − | 3240 | ÷ | ( | 1 | + | 20 100 | ) | × | x | = | 0 |
| 方程两边同时乘以: | x |
| 3000 | − | 3240 | ÷ | ( | 1 | + | 20 100 | ) | × | x | x | = | 0 |
| 方程两边同时乘以: | ( | 1 | + | 20 100 | ) |
| 3000 | ( | 1 | + | 20 100 | ) | − | 3240 | x | x | = | 0 |
| 3000 | × | 1 | + | 3000 | × | 20 100 | − | 3240 | x | x | = | 0 |
| 3000 | + | 600 | − | 3240 | x | x | = | 0 |
| 3600 | − | 3240 | x | x | = | 0 |
| x1= | - | √10 3 |
| x2= | √10 3 |