| x | + | ( | x | − | 5000 | ) | × | 3 100 | = | 6200 |
| Left side of the equation = | x | + | x | × | 3 100 | − | 5000 | × | 3 100 |
| = | x | + | x | × | 3 100 | − | 150 |
| = | 103 100 | x | − | 150 |
103 100 | x | − | 150 | = | 6200 |
103 100 | x | = | 6200 | + | 150 |
103 100 | x | = | 6350 |
| x | = | 6350 | ÷ | 103 100 |
| = | 6350 | × | 100 103 |
| x | = | 635000 103 |
| x | = | 6165.048544 |