| X | − | ( | X | − | 5000 | ) | × | 1 10 | − | 210 | = | 244412 25 |
| 方程左边 = | X | − | X | × | 1 10 | + | 5000 | × | 1 10 | − | 210 |
| = | X | − | X | × | 1 10 | + | 500 | − | 210 |
| = | 9 10 | X | + | 290 |
9 10 | X | + | 290 | = | 244412 25 |
9 10 | X | = | 244412 25 | − | 290 |
9 10 | X | = | 237162 25 |
| X | = | 237162 25 | ÷ | 9 10 |
| = | 237162 25 | × | 10 9 |
| = | 79054 5 | × | 2 3 |
| X | = | 158108 15 |
| X | = | 10540.533333 |