| 3 | ( | x | + | 2 | ) | − | 2 | ( | x | − | 5 | ) | = | 5 | x | − | 7 |
| 方程左边 = | 3 | x | + | 3 | × | 2 | − | 2 | ( | x | − | 5 | ) |
| = | 3 | x | + | 6 | − | 2 | ( | x | − | 5 | ) |
| = | 3 | x | + | 6 | − | 2 | x | + | 2 | × | 5 |
| = | 3 | x | + | 6 | − | 2 | x | + | 10 |
| = | 1 | x | + | 16 |
| 1 | x | + | 16 | = | 5 | x | − | 7 |
| 1 | x | − | 5 | x | = | - | 7 | − | 16 |
| - | 4 | x | = | - | 7 | − | 16 |
| - | 4 | x | = | - | 23 |
| 23 | = | 4 | x |
| 4 | x | = | 23 |
| x | = | 23 | ÷ | 4 |
| = | 23 | × | 1 4 |
| x | = | 23 4 |
| x | = | 5.75 |