| 10000 | X | × | 1 4 | = | 10000 | X | − | 19 20 | − | ( | 10000 | X | + | 85000 | ) |
| Left side of the equation = | 2500 | X |
| 2500 | X | = | 10000 | X | − | 19 20 | − | ( | 10000 | X | + | 85000 | ) |
| Right side of the equation = | 10000 | X | − | 19 20 | − | 10000 | X | − | 85000 |
| = | 0 | X | − | 1700019 20 |
| 2500 | X | = | - | 1700019 20 |
| X | = | - | 1700019 20 | ÷ | 2500 |
| = | - | 1700019 20 | × | 1 2500 |
| X | = | - | 1700019 50000 |
| X | = | - 34.00038 |