| - | 11 | ÷ | 3 | + | x | = | ( | 16 | ÷ | 9 | − | x | ) | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) | + | 3 |
| 方程左边 = | - | 11 3 | + | x |
| - | 11 3 | + | x | = | ( | 16 | ÷ | 9 | − | x | ) | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) | + | 3 |
| 方程右边 = | 16 | ÷ | 9 | × | ( | 16 | ÷ | 9 | − | x | ) | − | x | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) | + | 3 |
| = | 16 9 | ( | 16 | ÷ | 9 | − | x | ) | − | x | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) | + | 3 |
| = | 16 9 | × | 16 | ÷ | 9 | − | 16 9 | x | − | x | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) | + | 3 |
| = | 256 81 | − | 16 9 | x | − | x | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) | + | 3 |
| = | 499 81 | − | 16 9 | x | − | x | ( | 16 | ÷ | 9 | − | x | ) | − | 4 | ( | 16 | ÷ | 9 | − | x | ) |
| = | 499 81 | − | 16 9 | x | − | x | × | 16 | ÷ | 9 | + | x | x | − | 4 | ( | 16 | ÷ | 9 | − | x | ) |
| = | 499 81 | − | 16 9 | x | − | x | × | 16 9 | + | x | x | − | 4 | ( | 16 | ÷ | 9 | − | x | ) |
| = | 499 81 | − | 32 9 | x | + | x | x | − | 4 | ( | 16 | ÷ | 9 | − | x | ) |
| = | 499 81 | − | 32 9 | x | + | x | x | − | 4 | × | 16 | ÷ | 9 | + | 4 | x |
| = | 499 81 | − | 32 9 | x | + | x | x | − | 64 9 | + | 4 | x |
| = | - | 77 81 | + | 4 9 | x | + | x | x |
| - | 11 3 | + | x | = | - | 77 81 | + | 4 9 | x | + | x | x |