| 3 | ( | x | − | 2 | ) | − | 2 | ( | 4 | x | − | 1 | ) | = | 11 |
| 方程左边 = | 3 | x | − | 3 | × | 2 | − | 2 | ( | 4 | x | − | 1 | ) |
| = | 3 | x | − | 6 | − | 2 | ( | 4 | x | − | 1 | ) |
| = | 3 | x | − | 6 | − | 2 | × | 4 | x | + | 2 | × | 1 |
| = | 3 | x | − | 6 | − | 8 | x | + | 2 |
| = | - | 5 | x | − | 4 |
| - | 5 | x | − | 4 | = | 11 |
| - | 5 | x | = | 11 | + | 4 |
| - | 5 | x | = | 15 |
| - | 15 | = | 5 | x |
| 5 | x | = | - | 15 |
| x | = | - | 15 | ÷ | 5 |
| = | - | 15 | × | 1 5 |
| = | - | 3 | × | 1 |
| x | = | - | 3 |