| ( | ( | 2 | x | − | 1 | ) | ÷ | 3 | ) | − | ( | ( | 5 | x | − | 3 | ) | ÷ | 4 | ) | = | 1 |
| 方程左边 = | ( | 2 | x | − | 1 | ) | ÷ | 3 | − | ( | ( | 5 | x | − | 3 | ) | ÷ | 4 | ) |
| = | 2 | x | × | 1 3 | − | 1 | × | 1 3 | − | ( | ( | 5 | x | − | 3 | ) | ÷ | 4 | ) |
| = | 2 3 | x | − | 1 3 | − | ( | ( | 5 | x | − | 3 | ) | ÷ | 4 | ) |
| = | 2 3 | x | − | 1 3 | − | ( | 5 | x | − | 3 | ) | ÷ | 4 |
| = | 2 3 | x | − | 1 3 | − | 5 | x | × | 1 4 | + | 3 | × | 1 4 |
| = | 2 3 | x | − | 1 3 | − | 5 4 | x | + | 3 4 |
| = | - | 7 12 | x | + | 5 12 |
| - | 7 12 | x | + | 5 12 | = | 1 |
| - | 7 12 | x | = | 1 | − | 5 12 |
| - | 7 12 | x | = | 7 12 |
| - | 7 12 | = | 7 12 | x |
7 12 | x | = | - | 7 12 |
| x | = | - | 7 12 | ÷ | 7 12 |
| = | - | 7 12 | × | 12 7 |
| = | - | 1 | × | 1 |
| x | = | - | 1 |