| 2 | ( | 2 | ( | 2 | ( | x | + | 13 | ) | − | 5 | ) | + | 9 | ) | + | 5 | = | 5 | x | + | 17 |
| 方程左边 = | 2 | × | 2 | ( | 2 | ( | x | + | 13 | ) | − | 5 | ) | + | 2 | × | 9 | + | 5 |
| = | 4 | ( | 2 | ( | x | + | 13 | ) | − | 5 | ) | + | 18 | + | 5 |
| = | 4 | ( | 2 | ( | x | + | 13 | ) | − | 5 | ) | + | 23 |
| = | 4 | × | 2 | ( | x | + | 13 | ) | − | 4 | × | 5 | + | 23 |
| = | 8 | ( | x | + | 13 | ) | − | 20 | + | 23 |
| = | 8 | ( | x | + | 13 | ) | + | 3 |
| = | 8 | x | + | 8 | × | 13 | + | 3 |
| = | 8 | x | + | 104 | + | 3 |
| = | 8 | x | + | 107 |
| 8 | x | + | 107 | = | 5 | x | + | 17 |
| 8 | x | − | 5 | x | = | 17 | − | 107 |
| 3 | x | = | 17 | − | 107 |
| 3 | x | = | - | 90 |
| x | = | - | 90 | ÷ | 3 |
| = | - | 90 | × | 1 3 |
| = | - | 30 | × | 1 |
| x | = | - | 30 |