| ( | 11 | X | − | 6 | ) | ( | 11 | X | − | 60 | ) | = | 1008 |
| Left side of the equation = | 11 | X | ( | 11 | X | − | 60 | ) | − | 6 | ( | 11 | X | − | 60 | ) |
| = | 11 | X | × | 11 | X | − | 11 | X | × | 60 | − | 6 | ( | 11 | X | − | 60 | ) |
| = | 121 | X | X | − | 660 | X | − | 6 | ( | 11 | X | − | 60 | ) |
| = | 121 | X | X | − | 660 | X | − | 6 | × | 11 | X | + | 6 | × | 60 |
| = | 121 | X | X | − | 660 | X | − | 66 | X | + | 360 |
| = | 121 | X | X | − | 726 | X | + | 360 |
| 121 | X | X | − | 726 | X | + | 360 | = | 1008 |