| ( | x | − | 5000 | ) | × | 3 100 | = | x | − | 6000 |
| Left side of the equation = | x | × | 3 100 | − | 5000 | × | 3 100 |
| = | x | × | 3 100 | − | 150 |
3 100 | x | − | 150 | = | x | − | 6000 |
3 100 | x | − | x | = | - | 6000 | + | 150 |
| - | 97 100 | x | = | - | 6000 | + | 150 |
| - | 97 100 | x | = | - | 5850 |
| 5850 | = | 97 100 | x |
97 100 | x | = | 5850 |
| x | = | 5850 | ÷ | 97 100 |
| = | 5850 | × | 100 97 |
| x | = | 585000 97 |
| x | = | 6030.927835 |