| 0 | = | X | − | ( | 28 25 | − | 9 25 | ) | − | 160 | − | ( | 5000 | + | X | ) | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| 方程右边 = | X | − | 28 25 | + | 9 25 | − | 160 | − | ( | 5000 | + | X | ) | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | X | − | 4019 25 | − | ( | 5000 | + | X | ) | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | X | − | 4019 25 | − | 5000 | × | 2 25 | X | ( | 1 | − | 1 2 | ) | − | X | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | X | − | 4019 25 | − | 400 | X | ( | 1 | − | 1 2 | ) | − | X | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | X | − | 4019 25 | − | 400 | X | × | 1 | + | 400 | X | × | 1 2 | − | X | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | X | − | 4019 25 | − | 400 | X | + | 200 | X | − | X | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | - | 199 | X | − | 4019 25 | − | X | × | 2 25 | X | ( | 1 | − | 1 2 | ) |
| = | - | 199 | X | − | 4019 25 | − | X | × | 2 25 | X | × | 1 | + | X | × | 2 25 | X | × | 1 2 |
| = | - | 199 | X | − | 4019 25 | − | X | × | 2 25 | X | + | X | × | 1 25 | X |
| 0 | = | - | 199 | X | − | 4019 25 | − | X | × | 2 25 | X | + | X | × | 1 25 | X |
| X= | - | 129019 25 |