| ( | 13563 | − | X | ) | ÷ | X | = | 70 100 |
| Multiply both sides of the equation by: | X |
| ( | 13563 | − | X | ) | = | 70 100 | X |
| 13563 | − | X | = | 70 100 | X |
| - | X | − | 70 100 | X | = | - | 13563 |
| - | 17 10 | X | = | - | 13563 |
| 13563 | = | 17 10 | X |
17 10 | X | = | 13563 |
| X | = | 13563 | ÷ | 17 10 |
| = | 13563 | × | 10 17 |
| X | = | 135630 17 |
| X | = | 7978.235294 |