49 10 | = | 1 | x | × | 143 10 | x | × | 103 | x | × | 1 | x | ( | 3 40 | − | 1 2 | x | ) |
| 方程右边 = | 14729 10 | x | x | x | x | ( | 3 40 | − | 1 2 | x | ) |
49 10 | = | 14729 10 | x | x | x | x | ( | 3 40 | − | 1 2 | x | ) |
| 方程右边 = | 14729 10 | x | x | x | x | × | 3 40 | − | 14729 10 | x | x | x | x | × | 1 2 |
| = | 44187 400 | x | x | x | x | − | 14729 20 | x | x | x | x | x |
49 10 | = | 44187 400 | x | x | x | x | − | 14729 20 | x | x | x | x | x |