| 2 | ÷ | 5 | × | x | + | x | − | 1 | ÷ | 2 | = | 3 | ( | x | − | 1 | ) | ÷ | 2 | − | 8 | ÷ | 5 |
| 方程左边 = | 2 5 | x | + | x | − | 1 2 |
| = | 7 5 | x | − | 1 2 |
7 5 | x | − | 1 2 | = | 3 | ( | x | − | 1 | ) | ÷ | 2 | − | 8 | ÷ | 5 |
| 方程右边 = | 3 2 | ( | x | − | 1 | ) | − | 8 5 |
7 5 | x | − | 1 2 | = | 3 2 | ( | x | − | 1 | ) | − | 8 5 |
| 方程右边 = | 3 2 | x | − | 3 2 | × | 1 | − | 8 5 |
| = | 3 2 | x | − | 3 2 | − | 8 5 |
| = | 3 2 | x | − | 31 10 |
7 5 | x | − | 1 2 | = | 3 2 | x | − | 31 10 |
7 5 | x | − | 3 2 | x | = | - | 31 10 | + | 1 2 |
| - | 1 10 | x | = | - | 31 10 | + | 1 2 |
| - | 1 10 | x | = | - | 13 5 |
13 5 | = | 1 10 | x |
1 10 | x | = | 13 5 |
| x | = | 13 5 | ÷ | 1 10 |
| = | 13 5 | × | 10 |
| = | 13 | × | 2 |
| x | = | 26 |