| 480 | ÷ | 600 | = | x | ÷ | ( | 4400 | + | x | ) |
| Multiply both sides of the equation by: | ( | 4400 | + | x | ) |
| 480 | ÷ | 600 | × | ( | 4400 | + | x | ) | = | x |
| 480 | ÷ | 600 | × | 4400 | + | 480 | ÷ | 600 | × | x | = | x |
| 3520 | + | 4 5 | x | = | x |
4 5 | x | − | x | = | - | 3520 |
| - | 1 5 | x | = | - | 3520 |
| 3520 | = | 1 5 | x |
1 5 | x | = | 3520 |
| x | = | 3520 | ÷ | 1 5 |
| = | 3520 | × | 5 |
| x | = | 17600 |