| ( | 6000 | − | X | ) | ÷ | X | = | 17 100 |
| Multiply both sides of the equation by: | X |
| ( | 6000 | − | X | ) | = | 17 100 | X |
| 6000 | − | X | = | 17 100 | X |
| - | X | − | 17 100 | X | = | - | 6000 |
| - | 117 100 | X | = | - | 6000 |
| 6000 | = | 117 100 | X |
117 100 | X | = | 6000 |
| X | = | 6000 | ÷ | 117 100 |
| = | 6000 | × | 100 117 |
| = | 2000 | × | 100 39 |
| X | = | 200000 39 |
| X | = | 5128.205128 |