| ( | 2850 | + | x | ) | ( | 100 | − | 1 | ÷ | 50 | × | x | ) | − | x | = | 306600 |
| Left side of the equation = | 2850 | ( | 100 | − | 1 | ÷ | 50 | × | x | ) | + | x | ( | 100 | − | 1 | ÷ | 50 | × | x | ) | − | x |
| = | 2850 | × | 100 | − | 2850 | × | 1 | ÷ | 50 | × | x | + | x | ( | 100 | − | 1 | ÷ | 50 | × | x | ) | − | x |
| = | 285000 | − | 57 | x | + | x | ( | 100 | − | 1 | ÷ | 50 | × | x | ) | − | x |
| = | 285000 | − | 58 | x | + | x | ( | 100 | − | 1 | ÷ | 50 | × | x | ) |
| = | 285000 | − | 58 | x | + | x | × | 100 | − | x | × | 1 | ÷ | 50 | × | x |
| = | 285000 | − | 58 | x | + | x | × | 100 | − | x | × | 1 50 | x |
| = | 285000 | + | 42 | x | − | x | × | 1 50 | x |
| 285000 | + | 42 | x | − | x | × | 1 50 | x | = | 306600 |