| X | − | 57000 | − | ( | 3 100 | ( | X | − | 56700 | ) | ) | = | 100000 |
| Left side of the equation = | X | − | 57000 | − | 3 100 | ( | X | − | 56700 | ) |
| = | X | − | 57000 | − | 3 100 | X | + | 3 100 | × | 56700 |
| = | X | − | 57000 | − | 3 100 | X | + | 1701 |
| = | 97 100 | X | − | 55299 |
97 100 | X | − | 55299 | = | 100000 |
97 100 | X | = | 100000 | + | 55299 |
97 100 | X | = | 155299 |
| X | = | 155299 | ÷ | 97 100 |
| = | 155299 | × | 100 97 |
| X | = | 15529900 97 |
| X | = | 160102.061856 |