| ( | 2 | a | − | 240 | ) | ÷ | ( | a | − | 480 | ) | + | 5 | = | 480 | ÷ | ( | a | − | 240 | ) |
| Multiply both sides of the equation by: | ( | a | − | 480 | ) | , | ( | a | − | 240 | ) |
| ( | 2 | a | − | 240 | ) | ( | a | − | 240 | ) | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | ( | a | − | 480 | ) |
| 2 | a | ( | a | − | 240 | ) | − | 240 | ( | a | − | 240 | ) | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | ( | a | − | 480 | ) |
| 2 | a | ( | a | − | 240 | ) | − | 240 | ( | a | − | 240 | ) | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 480 | × | 480 |
| 2 | a | ( | a | − | 240 | ) | − | 240 | ( | a | − | 240 | ) | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 2 | a | × | 240 | − | 240 | ( | a | − | 240 | ) | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 480 | a | − | 240 | ( | a | − | 240 | ) | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 480 | a | − | 240 | a | + | 240 | × | 240 | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 480 | a | − | 240 | a | + | 57600 | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 720 | a | + | 57600 | + | 5 | ( | a | − | 480 | ) | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 720 | a | + | 57600 | + | 5 | a | ( | a | − | 240 | ) | − | 5 | × | 480 | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 720 | a | + | 57600 | + | 5 | a | ( | a | − | 240 | ) | − | 2400 | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 720 | a | + | 57600 | + | 5 | a | a | − | 5 | a | × | 240 | = | 480 | a | − | 230400 |
| 2 | a | a | − | 720 | a | + | 57600 | + | 5 | a | a | − | 1200 | a | − | 2400 | = | 480 | a | − | 230400 |
| 2 | a | a | − | 1920 | a | + | 57600 | + | 5 | a | a | − | 2400 | ( | a | − | 240 | ) | = | 480 | a | − | 230400 |
| 2 | a | a | − | 1920 | a | + | 57600 | + | 5 | a | a | − | 2400 | a | + | 2400 | = | 480 | a | − | 230400 |
| 2 | a | a | − | 1920 | a | + | 57600 | + | 5 | a | a | − | 2400 | a | + | 576000 | = | 480 | a | − | 230400 |
| 2 | a | a | − | 4320 | a | + | 633600 | + | 5 | a | a | = | 480 | a | − | 230400 |