| ( | X | − | 8013 5 | − | 5000 | ) | × | 3 10 | = | X | − | 171441 20 | − | 8013 5 |
| 方程左边 = | X | × | 3 10 | − | 8013 5 | × | 3 10 | − | 5000 | × | 3 10 |
| = | X | × | 3 10 | − | 24039 50 | − | 1500 |
| = | 3 10 | X | − | 99039 50 |
3 10 | X | − | 99039 50 | = | X | − | 171441 20 | − | 8013 5 |
| 方程右边 = | X | − | 203493 20 |
3 10 | X | − | 99039 50 | = | X | − | 203493 20 |
3 10 | X | − | X | = | - | 203493 20 | + | 99039 50 |
| - | 7 10 | X | = | - | 203493 20 | + | 99039 50 |
| - | 7 10 | X | = | - | 819387 100 |
819387 100 | = | 7 10 | X |
7 10 | X | = | 819387 100 |
| X | = | 819387 100 | ÷ | 7 10 |
| = | 819387 100 | × | 10 7 |
| = | 819387 10 | × | 1 7 |
| X | = | 819387 70 |
| X | = | 11705.528571 |