| ( | X | − | 5456 5 | − | 5000 | ) | × | 3 100 | = | X | − | 342577 50 |
| 方程左边 = | X | × | 3 100 | − | 5456 5 | × | 3 100 | − | 5000 | × | 3 100 |
| = | X | × | 3 100 | − | 4092 125 | − | 150 |
| = | 3 100 | X | − | 22842 125 |
3 100 | X | − | 22842 125 | = | X | − | 342577 50 |
3 100 | X | − | X | = | - | 342577 50 | + | 22842 125 |
| - | 97 100 | X | = | - | 342577 50 | + | 22842 125 |
| - | 97 100 | X | = | - | 1667201 250 |
1667201 250 | = | 97 100 | X |
97 100 | X | = | 1667201 250 |
| X | = | 1667201 250 | ÷ | 97 100 |
| = | 1667201 250 | × | 100 97 |
| = | 1667201 5 | × | 2 97 |
| X | = | 3334402 485 |
| X | = | 6875.05567 |