| 5 | + | a | = | 39 125 | ( | 1 | − | a | ) | ( | 6 | + | a | ) | ÷ | a |
| Multiply both sides of the equation by: | a |
| 5 | a | + | a | a | = | 39 125 | ( | 1 | − | a | ) | ( | 6 | + | a | ) |
| 5 | a | + | a | a | = | 39 125 | × | 1 | ( | 6 | + | a | ) | − | 39 125 | a | ( | 6 | + | a | ) |
| 5 | a | + | a | a | = | 39 125 | ( | 6 | + | a | ) | − | 39 125 | a | ( | 6 | + | a | ) |
| 5 | a | + | a | a | = | 39 125 | × | 6 | + | 39 125 | a | − | 39 125 | a | ( | 6 | + | a | ) |
| 5 | a | + | a | a | = | 234 125 | + | 39 125 | a | − | 39 125 | a | ( | 6 | + | a | ) |
| 5 | a | + | a | a | = | 234 125 | + | 39 125 | a | − | 39 125 | a | × | 6 | − | 39 125 | a | a |
| 5 | a | + | a | a | = | 234 125 | + | 39 125 | a | − | 234 125 | a | − | 39 125 | a | a |
| 5 | a | + | a | a | = | 234 125 | − | 39 25 | a | − | 39 125 | a | a |