| ( | ( | X | ÷ | 2 | − | 1 | ) | ÷ | 2 | − | 2 | ) | ÷ | 2 | − | 3 | = | 1 |
| Left side of the equation = | ( | X | ÷ | 2 | − | 1 | ) | ÷ | 2 | × | 1 2 | − | 2 | × | 1 2 | − | 3 |
| = | ( | X | ÷ | 2 | − | 1 | ) | × | 1 4 | − | 1 | − | 3 |
| = | ( | X | ÷ | 2 | − | 1 | ) | × | 1 4 | − | 4 |
| = | X | ÷ | 2 | × | 1 4 | − | 1 | × | 1 4 | − | 4 |
| = | X | × | 1 8 | − | 1 4 | − | 4 |
| = | 1 8 | X | − | 17 4 |
1 8 | X | − | 17 4 | = | 1 |
1 8 | X | = | 1 | + | 17 4 |
1 8 | X | = | 21 4 |
| X | = | 21 4 | ÷ | 1 8 |
| = | 21 4 | × | 8 |
| = | 21 | × | 2 |
| X | = | 42 |