| 10 | X | × | 11 | = | 2 | ( | ( | 156 | − | X | ) | − | 12 | ) |
| Left side of the equation = | 110 | X |
| 110 | X | = | 2 | ( | ( | 156 | − | X | ) | − | 12 | ) |
| Right side of the equation = | 2 | ( | 156 | − | X | ) | − | 2 | × | 12 |
| = | 2 | ( | 156 | − | X | ) | − | 24 |
| = | 2 | × | 156 | − | 2 | X | − | 24 |
| = | 312 | − | 2 | X | − | 24 |
| = | 288 | − | 2 | X |
| 110 | X | = | 288 | − | 2 | X |
| 110 | X | + | 2 | X | = | 288 |
| 112 | X | = | 288 |
| X | = | 288 | ÷ | 112 |
| = | 288 | × | 1 112 |
| = | 18 | × | 1 7 |
| X | = | 18 7 |
| X | = | 2.571429 |