| X | ÷ | ( | 4000 | + | 12 100 | X | ) | = | 2 |
| Multiply both sides of the equation by: | ( | 4000 | + | 12 100 | X | ) |
| X | = | 2 | ( | 4000 | + | 12 100 | X | ) |
| X | = | 2 | × | 4000 | + | 2 | × | 12 100 | X |
| X | = | 8000 | + | 6 25 | X |
| X | − | 6 25 | X | = | 8000 |
19 25 | X | = | 8000 |
| X | = | 8000 | ÷ | 19 25 |
| = | 8000 | × | 25 19 |
| X | = | 200000 19 |
| X | = | 10526.315789 |