| ( | 2809 10 | − | X | ) | ÷ | X | = | 568 2500 |
| 方程两边同时乘以: | X |
| ( | 2809 10 | − | X | ) | = | 568 2500 | X |
2809 10 | − | X | = | 568 2500 | X |
| - | X | − | 568 2500 | X | = | - | 2809 10 |
| - | 767 625 | X | = | - | 2809 10 |
2809 10 | = | 767 625 | X |
767 625 | X | = | 2809 10 |
| X | = | 2809 10 | ÷ | 767 625 |
| = | 2809 10 | × | 625 767 |
| = | 2809 2 | × | 125 767 |
| X | = | 351125 1534 |
| X | = | 228.895046 |