| ( | 1290 | − | X | ) | ÷ | X | = | 1549 10000 |
| Multiply both sides of the equation by: | X |
| ( | 1290 | − | X | ) | = | 1549 10000 | X |
| 1290 | − | X | = | 1549 10000 | X |
| - | X | − | 1549 10000 | X | = | - | 1290 |
| - | 11549 10000 | X | = | - | 1290 |
| 1290 | = | 11549 10000 | X |
11549 10000 | X | = | 1290 |
| X | = | 1290 | ÷ | 11549 10000 |
| = | 1290 | × | 10000 11549 |
| X | = | 12900000 11549 |
| X | = | 1116.979825 |