| X | ÷ | 126 | − | ( | 100 | − | X | ) | ÷ | 1000 | = | 1 10 |
| 方程左边 = | 1 126 | X | − | 100 | × | 1 1000 | + | X | × | 1 1000 |
| = | 1 126 | X | − | 1 10 | + | X | × | 1 1000 |
| = | 563 63000 | X | − | 1 10 |
563 63000 | X | − | 1 10 | = | 1 10 |
563 63000 | X | = | 1 10 | + | 1 10 |
563 63000 | X | = | 1 5 |
| X | = | 1 5 | ÷ | 563 63000 |
| = | 1 5 | × | 63000 563 |
| = | 1 | × | 12600 563 |
| X | = | 12600 563 |
| X | = | 22.380107 |