| ( | ( | 6013 | − | X | ) | ÷ | 6013 | ) | × | 100 | = | 1 5 |
| 方程左边 = | ( | 6013 | − | X | ) | ÷ | 6013 | × | 100 |
| = | ( | 6013 | − | X | ) | × | 100 6013 |
| = | 6013 | × | 100 6013 | − | X | × | 100 6013 |
| = | 100 | − | X | × | 100 6013 |
| 100 | − | 100 6013 | X | = | 1 5 |
| - | 100 6013 | X | = | 1 5 | − | 100 |
| - | 100 6013 | X | = | - | 499 5 |
499 5 | = | 100 6013 | X |
100 6013 | X | = | 499 5 |
| X | = | 499 5 | ÷ | 100 6013 |
| = | 499 5 | × | 6013 100 |
| X | = | 3000487 500 |
| X | = | 6000.974 |