| 2 | = | 100 | ( | - | 216 | ) | ÷ | ( | x | × | 1050 | ÷ | 100 | ) |
| Multiply both sides of the equation by: | ( | x | × | 1050 | ÷ | 100 | ) |
| 2 | ( | x | × | 1050 | ÷ | 100 | ) | = | 100 | ( | - | 216 | ) |
| 2 | x | × | 1050 | ÷ | 100 | = | 100 | ( | - | 216 | ) |
| 2 | x | × | 1050 | ÷ | 100 | = | - | 100 | × | 216 |
| 21 | x | = | - | 21600 |
| x | = | - | 21600 | ÷ | 21 |
| = | - | 21600 | × | 1 21 |
| = | - | 7200 | × | 1 7 |
| x | = | - | 7200 7 |
| x | = | - 1028.571429 |