| X | − | 4 | ÷ | 4 | − | X | = | ( | 1 | − | 1 10 | X | ÷ | 3 5 | ) | − | 1 |
| Left side of the equation = | X | − | 1 | − | X |
| = | 0 | X | − | 1 |
| 0 | X | − | 1 | = | ( | 1 | − | 1 10 | X | ÷ | 3 5 | ) | − | 1 |
| Right side of the equation = | 1 | − | 1 10 | X | ÷ | 3 5 | − | 1 |
| = | 1 | − | 1 6 | X | − | 1 |
| = | 0 | − | 1 6 | X |
| - | 1 | = | - | 1 6 | X |
1 6 | X | = | 1 |
| X | = | 1 | ÷ | 1 6 |
| = | 1 | × | 6 |
| X | = | 6 |