| ( | X | − | 5930 | ) | × | 3 100 | = | X | − | 833269 100 |
| 方程左边 = | X | × | 3 100 | − | 5930 | × | 3 100 |
| = | X | × | 3 100 | − | 1779 10 |
3 100 | X | − | 1779 10 | = | X | − | 833269 100 |
3 100 | X | − | X | = | - | 833269 100 | + | 1779 10 |
| - | 97 100 | X | = | - | 833269 100 | + | 1779 10 |
| - | 97 100 | X | = | - | 815479 100 |
815479 100 | = | 97 100 | X |
97 100 | X | = | 815479 100 |
| X | = | 815479 100 | ÷ | 97 100 |
| = | 815479 100 | × | 100 97 |
| = | 8407 | × | 1 |
| X | = | 8407 |