| ( | 2437 25 | − | X | ) | ÷ | X | = | 2157 5000 |
| 方程两边同时乘以: | X |
| ( | 2437 25 | − | X | ) | = | 2157 5000 | X |
2437 25 | − | X | = | 2157 5000 | X |
| - | X | − | 2157 5000 | X | = | - | 2437 25 |
| - | 7157 5000 | X | = | - | 2437 25 |
2437 25 | = | 7157 5000 | X |
7157 5000 | X | = | 2437 25 |
| X | = | 2437 25 | ÷ | 7157 5000 |
| = | 2437 25 | × | 5000 7157 |
| = | 2437 | × | 200 7157 |
| X | = | 487400 7157 |
| X | = | 68.10116 |