| X | − | 1 | ÷ | 2 | × | ( | X | − | 1 | ) | = | 0 |
| Left side of the equation = | X | − | 1 2 | ( | X | − | 1 | ) |
| X | − | 1 2 | ( | X | − | 1 | ) | = | 0 |
| Left side of the equation = | X | − | 1 2 | X | + | 1 2 | × | 1 |
| = | X | − | 1 2 | X | + | 1 2 |
| = | 1 2 | X | + | 1 2 |
1 2 | X | + | 1 2 | = | 0 |
1 2 | X | = | 0 | − | 1 2 |
1 2 | X | = | - | 1 2 |
| X | = | - | 1 2 | ÷ | 1 2 |
| = | - | 1 2 | × | 2 |
| = | - | 1 | × | 1 |
| X | = | - | 1 |