| 14 | ( | x | − | 7 | ) | − | 11 | ( | 3 | x | − | 2 | ) | + | 1 | = | - | 18 |
| 方程左边 = | 14 | x | − | 14 | × | 7 | − | 11 | ( | 3 | x | − | 2 | ) | + | 1 |
| = | 14 | x | − | 98 | − | 11 | ( | 3 | x | − | 2 | ) | + | 1 |
| = | 14 | x | − | 97 | − | 11 | ( | 3 | x | − | 2 | ) |
| = | 14 | x | − | 97 | − | 11 | × | 3 | x | + | 11 | × | 2 |
| = | 14 | x | − | 97 | − | 33 | x | + | 22 |
| = | - | 19 | x | − | 75 |
| - | 19 | x | − | 75 | = | - | 18 |
| - | 19 | x | = | - | 18 | + | 75 |
| - | 19 | x | = | 57 |
| - | 57 | = | 19 | x |
| 19 | x | = | - | 57 |
| x | = | - | 57 | ÷ | 19 |
| = | - | 57 | × | 1 19 |
| = | - | 3 | × | 1 |
| x | = | - | 3 |