| 3 | ( | 2 | x | − | 1 | ) | − | 11 | = | x | − | 2 | ( | 5 | − | x | ) |
| 方程左边 = | 3 | × | 2 | x | − | 3 | × | 1 | − | 11 |
| = | 6 | x | − | 3 | − | 11 |
| = | 6 | x | − | 14 |
| 6 | x | − | 14 | = | x | − | 2 | ( | 5 | − | x | ) |
| 方程右边 = | x | − | 2 | × | 5 | + | 2 | x |
| = | x | − | 10 | + | 2 | x |
| = | 3 | x | − | 10 |
| 6 | x | − | 14 | = | 3 | x | − | 10 |
| 6 | x | − | 3 | x | = | - | 10 | + | 14 |
| 3 | x | = | - | 10 | + | 14 |
| 3 | x | = | 4 |
| x | = | 4 | ÷ | 3 |
| = | 4 | × | 1 3 |
| x | = | 4 3 |
| x | = | 1.333333 |