| ( | X | ÷ | 101 100 | − | 60000 | ) | × | 1 5 | − | 16920 | = | X | × | 7 100 |
| 方程左边 = | X | ÷ | 101 100 | × | 1 5 | − | 60000 | × | 1 5 | − | 16920 |
| = | X | × | 20 101 | − | 12000 | − | 16920 |
| = | 20 101 | X | − | 28920 |
20 101 | X | − | 28920 | = | X | × | 7 100 |
20 101 | X | − | 7 100 | X | = | 28920 |
1293 10100 | X | = | 28920 |
| X | = | 28920 | ÷ | 1293 10100 |
| = | 28920 | × | 10100 1293 |
| = | 9640 | × | 10100 431 |
| X | = | 97364000 431 |
| X | = | 225902.552204 |