| 2000 | ( | X | − | 200 | ) | × | 19 20 | = | 2000 | × | 200 | × | 20 100 |
| Left side of the equation = | 1900 | ( | X | − | 200 | ) |
| 1900 | ( | X | − | 200 | ) | = | 2000 | × | 200 | × | 20 100 |
| Left side of the equation = | 1900 | X | − | 1900 | × | 200 |
| = | 1900 | X | − | 380000 |
| 1900 | X | − | 380000 | = | 2000 | × | 200 | × | 20 100 |
| Right side of the equation = | 80000 |
| 1900 | X | − | 380000 | = | 80000 |
| 1900 | X | = | 80000 | + | 380000 |
| 1900 | X | = | 460000 |
| X | = | 460000 | ÷ | 1900 |
| = | 460000 | × | 1 1900 |
| = | 4600 | × | 1 19 |
| X | = | 4600 19 |
| X | = | 242.105263 |