| ( | 483 50 | − | 5000 | − | X | ) | × | 1 40 | = | X |
| Left side of the equation = | 483 50 | × | 1 40 | − | 5000 | × | 1 40 | − | X | × | 1 40 |
| = | 483 2000 | − | 125 | − | X | × | 1 40 |
| = | - | 249517 2000 | − | 1 40 | X |
| - | 249517 2000 | − | 1 40 | X | = | X |
| - | 1 40 | X | − | X | = | 249517 2000 |
| - | 41 40 | X | = | 249517 2000 |
| - | 249517 2000 | = | 41 40 | X |
41 40 | X | = | - | 249517 2000 |
| X | = | - | 249517 2000 | ÷ | 41 40 |
| = | - | 249517 2000 | × | 40 41 |
| = | - | 249517 50 | × | 1 41 |
| X | = | - | 249517 2050 |
| X | = | - 121.71561 |