| 4 | × | 4 | x | = | 6 | × | 6 | ( | x | − | 6 | ) |
| Left side of the equation = | 16 | x |
| 16 | x | = | 6 | × | 6 | ( | x | − | 6 | ) |
| Right side of the equation = | 36 | ( | x | − | 6 | ) |
| 16 | x | = | 36 | ( | x | − | 6 | ) |
| Right side of the equation = | 36 | x | − | 36 | × | 6 |
| = | 36 | x | − | 216 |
| 16 | x | = | 36 | x | − | 216 |
| 16 | x | − | 36 | x | = | - | 216 |
| - | 20 | x | = | - | 216 |
| 216 | = | 20 | x |
| 20 | x | = | 216 |
| x | = | 216 | ÷ | 20 |
| = | 216 | × | 1 20 |
| = | 54 | × | 1 5 |
| x | = | 54 5 |
| x | = | 10.8 |