| 2400 | ÷ | x | − | 3 | = | 2400 | ÷ | ( | x | + | 180 | ) |
| Multiply both sides of the equation by: | x | , | ( | x | + | 180 | ) |
| 2400 | ( | x | + | 180 | ) | − | 3 | x | ( | x | + | 180 | ) | = | 2400 | x |
| 2400 | x | + | 2400 | × | 180 | − | 3 | x | ( | x | + | 180 | ) | = | 2400 | x |
| 2400 | x | + | 432000 | − | 3 | x | ( | x | + | 180 | ) | = | 2400 | x |
| 2400 | x | + | 432000 | − | 3 | x | x | − | 3 | x | × | 180 | = | 2400 | x |
| 2400 | x | + | 432000 | − | 3 | x | x | − | 540 | x | = | 2400 | x |
| 1860 | x | + | 432000 | − | 3 | x | x | = | 2400 | x |