| 1 | − | ( | x | x | ) | ÷ | 6 | = | 1 5 | − | ( | x | + | 1 | ) | ( | x | + | 1 | ) |
| Left side of the equation = | 1 | − | x | x | × | 1 6 |
| 1 | − | x | x | × | 1 6 | = | 1 5 | − | ( | x | + | 1 | ) | ( | x | + | 1 | ) |
| Right side of the equation = | 1 5 | − | x | ( | x | + | 1 | ) | − | 1 | ( | x | + | 1 | ) |
| = | 1 5 | − | x | x | − | x | × | 1 | − | 1 | ( | x | + | 1 | ) |
| = | 1 5 | − | x | x | − | 1 | x | − | 1 | x | − | 1 | × | 1 |
| = | 1 5 | − | x | x | − | 1 | x | − | 1 | x | − | 1 |
| = | - | 4 5 | − | x | x | − | 2 | x |
| 1 | − | x | x | × | 1 6 | = | - | 4 5 | − | x | x | − | 2 | x |