| 2000 | x | − | 2000 | × | 200 | − | 2000 | x | × | 5 100 | = | 2000 | × | 200 | × | 20 100 |
| Left side of the equation = | 2000 | x | − | 400000 | − | 100 | x |
| = | 1900 | x | − | 400000 |
| 1900 | x | − | 400000 | = | 2000 | × | 200 | × | 20 100 |
| Right side of the equation = | 80000 |
| 1900 | x | − | 400000 | = | 80000 |
| 1900 | x | = | 80000 | + | 400000 |
| 1900 | x | = | 480000 |
| x | = | 480000 | ÷ | 1900 |
| = | 480000 | × | 1 1900 |
| = | 4800 | × | 1 19 |
| x | = | 4800 19 |
| x | = | 252.631579 |