| 2 | − | 2 | ( | x | − | 3 | ) | = | 17 | − | 3 | ( | 1 | + | 2 | x | ) |
| 方程左边 = | 2 | − | 2 | x | + | 2 | × | 3 |
| = | 2 | − | 2 | x | + | 6 |
| = | 8 | − | 2 | x |
| 8 | − | 2 | x | = | 17 | − | 3 | ( | 1 | + | 2 | x | ) |
| 方程右边 = | 17 | − | 3 | × | 1 | − | 3 | × | 2 | x |
| = | 17 | − | 3 | − | 6 | x |
| = | 14 | − | 6 | x |
| 8 | − | 2 | x | = | 14 | − | 6 | x |
| - | 2 | x | + | 6 | x | = | 14 | − | 8 |
| 4 | x | = | 14 | − | 8 |
| 4 | x | = | 6 |
| x | = | 6 | ÷ | 4 |
| = | 6 | × | 1 4 |
| = | 3 | × | 1 2 |
| x | = | 3 2 |
| x | = | 1.5 |