| ( | x | − | 1 | ) | ÷ | 2 | − | ( | 5 | x | + | 2 | ) | ÷ | 4 | = | 1 |
| 方程左边 = | x | × | 1 2 | − | 1 | × | 1 2 | − | ( | 5 | x | + | 2 | ) | × | 1 4 |
| = | x | × | 1 2 | − | 1 2 | − | ( | 5 | x | + | 2 | ) | × | 1 4 |
| = | 1 2 | x | − | 1 2 | − | 5 | x | × | 1 4 | − | 2 | × | 1 4 |
| = | 1 2 | x | − | 1 2 | − | 5 4 | x | − | 1 2 |
| = | - | 3 4 | x | − | 1 |
| - | 3 4 | x | − | 1 | = | 1 |
| - | 3 4 | x | = | 1 | + | 1 |
| - | 3 4 | x | = | 2 |
| - | 2 | = | 3 4 | x |
3 4 | x | = | - | 2 |
| x | = | - | 2 | ÷ | 3 4 |
| = | - | 2 | × | 4 3 |
| x | = | - | 8 3 |
| x | = | - 2.666667 |