| 3 | = | 100 | ( | x | − | 216 | ) | ÷ | ( | x | × | 600 | ÷ | 100 | ) |
| Multiply both sides of the equation by: | ( | x | × | 600 | ÷ | 100 | ) |
| 3 | ( | x | × | 600 | ÷ | 100 | ) | = | 100 | ( | x | − | 216 | ) |
| 3 | x | × | 600 | ÷ | 100 | = | 100 | ( | x | − | 216 | ) |
| 3 | x | × | 600 | ÷ | 100 | = | 100 | x | − | 100 | × | 216 |
| 18 | x | = | 100 | x | − | 21600 |
| 18 | x | − | 100 | x | = | - | 21600 |
| - | 82 | x | = | - | 21600 |
| 21600 | = | 82 | x |
| 82 | x | = | 21600 |
| x | = | 21600 | ÷ | 82 |
| = | 21600 | × | 1 82 |
| = | 10800 | × | 1 41 |
| x | = | 10800 41 |
| x | = | 263.414634 |