| 3800 | x | − | 5000 | ( | 1 | + | x | ) | × | 1 25 | = | 0 |
| Left side of the equation = | 3800 | x | − | 200 | ( | 1 | + | x | ) |
| 3800 | x | − | 200 | ( | 1 | + | x | ) | = | 0 |
| Left side of the equation = | 3800 | x | − | 200 | × | 1 | − | 200 | x |
| = | 3800 | x | − | 200 | − | 200 | x |
| = | 3600 | x | − | 200 |
| 3600 | x | − | 200 | = | 0 |
| 3600 | x | = | 0 | + | 200 |
| 3600 | x | = | 200 |
| x | = | 200 | ÷ | 3600 |
| = | 200 | × | 1 3600 |
| = | 1 | × | 1 18 |
| x | = | 1 18 |
| x | = | 0.055556 |