| 1 | X | ( | 1 | − | 25 100 | ) | X | ( | 1 | + | 25 100 | ) | = | 0 |
| 方程左边 = | 1 | X | × | 1 | X | ( | 1 | + | 25 100 | ) | − | 1 | X | × | 25 100 | X | ( | 1 | + | 25 100 | ) |
| = | 1 | X | X | ( | 1 | + | 25 100 | ) | − | 1 4 | X | X | ( | 1 | + | 25 100 | ) |
| = | 1 | X | X | × | 1 | + | 1 | X | X | × | 25 100 | − | 1 4 | X | X | ( | 1 | + | 25 100 | ) |
| = | 1 | X | X | + | 1 4 | X | X | − | 1 4 | X | X | ( | 1 | + | 25 100 | ) |
| = | 1 | X | X | + | 1 4 | X | X | − | 1 4 | X | X | × | 1 | − | 1 4 | X |
| = | 1 | X | X | + | 1 4 | X | X | − | 1 4 | X | X | − | 1 16 | X | X |
| 1 | X | X | + | 1 4 | X | X | − | 1 4 | X | X | − | 1 16 | X | X | = | 0 |