| ( | 50000 | − | x | ) | ( | 8 | + | 2500 | ÷ | x | ) | = | 480000 |
| 50000 | ( | 8 | + | 2500 | ÷ | x | ) | − | x | ( | 8 | + | 2500 | ÷ | x | ) | = | 480000 |
| 50000 | × | 8 | + | 50000 | × | 2500 | ÷ | x | − | x | ( | 8 | + | 2500 | ÷ | x | ) | = | 480000 |
| 400000 | + | 125000000 | ÷ | x | − | x | ( | 8 | + | 2500 | ÷ | x | ) | = | 480000 |
| Multiply both sides of the equation by: | x |
| 400000 | x | + | 125000000 | − | x | ( | 8 | + | 2500 | ÷ | x | ) | x | = | 480000 | x |
| 400000 | x | + | 125000000 | − | x | × | 8 | x | − | x | × | 2500 | ÷ | x | × | x | = | 480000 | x |