| 24 | ( | 15000 | ÷ | ( | x | + | 15000 | ) | ) | = | 2 |
| 24 | × | 15000 | ÷ | ( | x | + | 15000 | ) | = | 2 |
| 360000 | ÷ | ( | x | + | 15000 | ) | = | 2 |
| 方程两边同时乘以: | ( | x | + | 15000 | ) |
| 360000 | = | 2 | ( | x | + | 15000 | ) |
| 360000 | = | 2 | x | + | 2 | × | 15000 |
| 360000 | = | 2 | x | + | 30000 |
| - | 2 | x | = | 30000 | − | 360000 |
| - | 2 | x | = | - | 330000 |
| 330000 | = | 2 | x |
| 2 | x | = | 330000 |
| x | = | 330000 | ÷ | 2 |
| = | 330000 | × | 1 2 |
| = | 165000 | × | 1 |
| x | = | 165000 |