| X | − | X | × | 3 100 | − | ( | X | + | 8560747 10 | ) | × | 3 10000 | = | 8560747 10 |
| 方程左边 = | 97 100 | X | − | ( | X | + | 8560747 10 | ) | × | 3 10000 |
97 100 | X | − | ( | X | + | 8560747 10 | ) | × | 3 10000 | = | 8560747 10 |
| 方程左边 = | 97 100 | X | − | X | × | 3 10000 | − | 8560747 10 | × | 3 10000 |
| = | 97 100 | X | − | X | × | 3 10000 | − | 25682241 100000 |
| = | 9697 10000 | X | − | 25682241 100000 |
9697 10000 | X | − | 25682241 100000 | = | 8560747 10 |
9697 10000 | X | = | 8560747 10 | + | 25682241 100000 |