| ( | 7127 25 | − | x | ) | ÷ | x | = | 2563 2000 |
| 方程两边同时乘以: | x |
| ( | 7127 25 | − | x | ) | = | 2563 2000 | x |
7127 25 | − | x | = | 2563 2000 | x |
| - | x | − | 2563 2000 | x | = | - | 7127 25 |
| - | 4563 2000 | x | = | - | 7127 25 |
7127 25 | = | 4563 2000 | x |
4563 2000 | x | = | 7127 25 |
| x | = | 7127 25 | ÷ | 4563 2000 |
| = | 7127 25 | × | 2000 4563 |
| = | 7127 | × | 80 4563 |
| x | = | 570160 4563 |
| x | = | 124.952882 |