| ( | 4 | ÷ | 3 | − | x | ) | ( | 2 | ÷ | 3 | − | x | ) | = | 1 | ÷ | 4 |
| 方程左边 = | 4 | ÷ | 3 | × | ( | 2 | ÷ | 3 | − | x | ) | − | x | ( | 2 | ÷ | 3 | − | x | ) |
| = | 4 3 | ( | 2 | ÷ | 3 | − | x | ) | − | x | ( | 2 | ÷ | 3 | − | x | ) |
| = | 4 3 | × | 2 | ÷ | 3 | − | 4 3 | x | − | x | ( | 2 | ÷ | 3 | − | x | ) |
| = | 8 9 | − | 4 3 | x | − | x | ( | 2 | ÷ | 3 | − | x | ) |
| = | 8 9 | − | 4 3 | x | − | x | × | 2 | ÷ | 3 | + | x | x |
| = | 8 9 | − | 4 3 | x | − | x | × | 2 3 | + | x | x |
| = | 8 9 | − | 2 | x | + | x | x |
8 9 | − | 2 | x | + | x | x | = | 1 | ÷ | 4 |
| 方程右边 = | 1 4 |
8 9 | − | 2 | x | + | x | x | = | 1 4 |