| 3 | ( | 2 | x | − | 6 | ) | ( | x | − | 4 | ) | = | 24 |
| Left side of the equation = | 3 | × | 2 | x | ( | x | − | 4 | ) | − | 3 | × | 6 | ( | x | − | 4 | ) |
| = | 6 | x | ( | x | − | 4 | ) | − | 18 | ( | x | − | 4 | ) |
| = | 6 | x | x | − | 6 | x | × | 4 | − | 18 | ( | x | − | 4 | ) |
| = | 6 | x | x | − | 24 | x | − | 18 | ( | x | − | 4 | ) |
| = | 6 | x | x | − | 24 | x | − | 18 | x | + | 18 | × | 4 |
| = | 6 | x | x | − | 24 | x | − | 18 | x | + | 72 |
| = | 6 | x | x | − | 42 | x | + | 72 |
| 6 | x | x | − | 42 | x | + | 72 | = | 24 |