| 3 | ( | x | − | 2 | ) | = | 2 | − | 5 | ( | x | + | 2 | ) |
| 方程左边 = | 3 | x | − | 3 | × | 2 |
| = | 3 | x | − | 6 |
| 3 | x | − | 6 | = | 2 | − | 5 | ( | x | + | 2 | ) |
| 方程右边 = | 2 | − | 5 | x | − | 5 | × | 2 |
| = | 2 | − | 5 | x | − | 10 |
| = | - | 8 | − | 5 | x |
| 3 | x | − | 6 | = | - | 8 | − | 5 | x |
| 3 | x | + | 5 | x | = | - | 8 | + | 6 |
| 8 | x | = | - | 8 | + | 6 |
| 8 | x | = | - | 2 |
| x | = | - | 2 | ÷ | 8 |
| = | - | 2 | × | 1 8 |
| = | - | 1 | × | 1 4 |
| x | = | - | 1 4 |
| x | = | - 0.25 |