| 330 | × | 510 | ( | 1 | ÷ | ( | 330 | − | x | ) | − | 1 | ÷ | ( | 330 | + | x | ) | ) | = | 3 |
| 330 | × | 510 | × | 1 | ÷ | ( | 330 | − | x | ) | − | 330 | × | 510 | × | 1 | ÷ | ( | 330 | + | x | ) | = | 3 |
| 168300 | ÷ | ( | 330 | − | x | ) | − | 168300 | ÷ | ( | 330 | + | x | ) | = | 3 |
| Multiply both sides of the equation by: | ( | 330 | − | x | ) |
| 168300 | − | 168300 | ÷ | ( | 330 | + | x | ) | × | ( | 330 | − | x | ) | = | 3 | ( | 330 | − | x | ) |
| 168300 | − | 168300 | ÷ | ( | 330 | + | x | ) | × | 330 | + | 168300 | ÷ | ( | 330 | + | x | ) | × | x | = | 3 | ( | 330 | − | x | ) |
| 168300 | − | 168300 | ÷ | ( | 330 | + | x | ) | × | 330 | + | 168300 | ÷ | ( | 330 | + | x | ) | × | x | = | 3 | × | 330 | − | 3 | x |
| 168300 | − | 55539000 | ÷ | ( | 330 | + | x | ) | + | 168300 | ÷ | ( | 330 | + | x | ) | × | x | = | 990 | − | 3 | x |
| Multiply both sides of the equation by: | ( | 330 | + | x | ) |
| 168300 | ( | 330 | + | x | ) | − | 55539000 | + | 168300 | x | = | 990 | ( | 330 | + | x | ) | − | 3 | x | ( | 330 | + | x | ) |
| 168300 | × | 330 | + | 168300 | x | − | 55539000 | + | 168300 | x | = | 990 | ( | 330 | + | x | ) | − | 3 | x | ( | 330 | + | x | ) |
| 168300 | × | 330 | + | 168300 | x | − | 55539000 | + | 168300 | x | = | 990 | × | 330 | + | 990 | x | − | 3 | x | ( | 330 | + | x | ) |
| 55539000 | + | 168300 | x | − | 55539000 | + | 168300 | x | = | 326700 | + | 990 | x | − | 3 | x | ( | 330 | + | x | ) |
| 0 | + | 336600 | x | = | 326700 | + | 990 | x | − | 3 | x | ( | 330 | + | x | ) |
| 336600 | x | = | 326700 | + | 990 | x | − | 3 | x | × | 330 | − | 3 | x | x |
| 336600 | x | = | 326700 | + | 990 | x | − | 990 | x | − | 3 | x | x |
| 336600 | x | = | 326700 | + | 0 | x | − | 3 | x | x |