| x | ÷ | ( | x | + | 587 | ) | = | 69 100 |
| 方程两边同时乘以: | ( | x | + | 587 | ) |
| x | = | 69 100 | ( | x | + | 587 | ) |
| x | = | 69 100 | x | + | 69 100 | × | 587 |
| x | = | 69 100 | x | + | 40503 100 |
| x | − | 69 100 | x | = | 40503 100 |
31 100 | x | = | 40503 100 |
| x | = | 40503 100 | ÷ | 31 100 |
| = | 40503 100 | × | 100 31 |
| = | 40503 | × | 1 31 |
| x | = | 40503 31 |
| x | = | 1306.548387 |