| ( | 5200 | − | X | ) | ÷ | X | = | - | 1 100 |
| Multiply both sides of the equation by: | X |
| ( | 5200 | − | X | ) | = | - | 1 100 | X |
| 5200 | − | X | = | - | 1 100 | X |
| - | X | + | 1 100 | X | = | - | 5200 |
| - | 99 100 | X | = | - | 5200 |
| 5200 | = | 99 100 | X |
99 100 | X | = | 5200 |
| X | = | 5200 | ÷ | 99 100 |
| = | 5200 | × | 100 99 |
| X | = | 520000 99 |
| X | = | 5252.525253 |