| X | ÷ | ( | X | + | 12000 | ) | = | 37 500 |
| Multiply both sides of the equation by: | ( | X | + | 12000 | ) |
| X | = | 37 500 | ( | X | + | 12000 | ) |
| X | = | 37 500 | X | + | 37 500 | × | 12000 |
| X | = | 37 500 | X | + | 888 |
| X | − | 37 500 | X | = | 888 |
463 500 | X | = | 888 |
| X | = | 888 | ÷ | 463 500 |
| = | 888 | × | 500 463 |
| X | = | 444000 463 |
| X | = | 958.963283 |