| ( | 2 | d | − | 2 | ) | ÷ | ( | d | d | − | 2 | d | ) | = | 1 | ÷ | ( | d | − | 4 | ) |
| Multiply both sides of the equation by: | ( | d | d | − | 2 | d | ) | , | ( | d | − | 4 | ) |
| ( | 2 | d | − | 2 | ) | ( | d | − | 4 | ) | = | 1 | ( | d | d | − | 2 | d | ) |
| 2 | d | ( | d | − | 4 | ) | − | 2 | ( | d | − | 4 | ) | = | 1 | ( | d | d | − | 2 | d | ) |
| 2 | d | ( | d | − | 4 | ) | − | 2 | ( | d | − | 4 | ) | = | 1 | d | d | − | 1 | × | 2 | d |
| 2 | d | ( | d | − | 4 | ) | − | 2 | ( | d | − | 4 | ) | = | 1 | d | d | − | 2 | d |
| 2 | d | d | − | 2 | d | × | 4 | − | 2 | ( | d | − | 4 | ) | = | 1 | d | d | − | 2 | d |
| 2 | d | d | − | 8 | d | − | 2 | ( | d | − | 4 | ) | = | 1 | d | d | − | 2 | d |
| 2 | d | d | − | 8 | d | − | 2 | d | + | 2 | × | 4 | = | 1 | d | d | − | 2 | d |
| 2 | d | d | − | 8 | d | − | 2 | d | + | 8 | = | 1 | d | d | − | 2 | d |
| 2 | d | d | − | 10 | d | + | 8 | = | 1 | d | d | − | 2 | d |