| ( | 11 | − | x | ) | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 | ÷ | 16 | = | 0 |
| 方程左边 = | ( | 11 | − | x | ) | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 16 |
| ( | 11 | − | x | ) | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 16 | = | 0 |
| 方程左边 = | 11 | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 16 |
| = | 11 | ( | 21 | ÷ | 4 | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 16 |
| = | 11 | × | 21 | ÷ | 4 | × | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x |
| = | 231 4 | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 16 |
| = | 231 4 | ( | 31 | ÷ | 4 | ) | − | 231 4 | x | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x |
| = | 231 4 | × | 31 | ÷ | 4 | − | 231 4 | x | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) |
| = | 7161 16 | − | 231 4 | x | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x | − | 1017 16 |
| = | 384 | − | 231 4 | x | − | 11 | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x |
| = | 384 | − | 231 4 | x | − | 11 | x | ( | 31 | ÷ | 4 | ) | + | 11 | x | x | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) |
| = | 384 | − | 231 4 | x | − | 11 | x | × | 31 | ÷ | 4 | + | 11 | x | x | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) |
| = | 384 | − | 231 4 | x | − | 341 4 | x | + | 11 | x | x | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | ( | ( | 21 | ÷ | 4 | ) | − | x | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | ( | 123 | ÷ | 16 | ) | x |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | ( | 21 | ÷ | 4 | ) | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | x | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | × | 21 | ÷ | 4 | × | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | x | x |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | × | 21 4 | ( | ( | 31 | ÷ | 4 | ) | − | x | ) | + | x | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | × | 21 4 | ( | 31 | ÷ | 4 | ) | + | x | × | 21 4 | x |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | × | 21 4 | × | 31 | ÷ | 4 | + | x | × | 21 4 |
| = | 384 | − | 143 | x | + | 11 | x | x | − | x | × | 651 16 | + | x | × | 21 4 | x | + | x |
| = | 384 | − | 2939 16 | x | + | 11 | x | x | + | x | × | 21 4 | x | + | x | x | ( | ( | 31 | ÷ | 4 | ) | − | x | ) |
| = | 384 | − | 2939 16 | x | + | 11 | x | x | + | x | × | 21 4 | x | + | x | x | ( | 31 | ÷ | 4 | ) |
| = | 384 | − | 2939 16 | x | + | 11 | x | x | + | x | × | 21 4 | x | + | x | x | × | 31 |
| = | 384 | − | 2939 16 | x | + | 11 | x | x | + | x | × | 21 4 | x | + | x | x | × | 31 4 |
| = | 384 | − | 2939 16 | x | + | 11 | x | x | + | x | × | 21 4 | x | + | x | x | × | 31 4 |