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