| ( | ( | 2900 | − | y | ) | ÷ | 50 | + | 8 | ) | ( | y | − | 2500 | ) | = | 5000 |
| Left side of the equation = | ( | 2900 | − | y | ) | ÷ | 50 | × | ( | y | − | 2500 | ) | + | 8 | ( | y | − | 2500 | ) |
| = | 2900 | × | 1 50 | ( | y | − | 2500 | ) | − | y | × | 1 50 | ( | y | − | 2500 | ) | + | 8 | ( | y | − | 2500 | ) |
| = | 58 | ( | y | − | 2500 | ) | − | y | × | 1 50 | ( | y | − | 2500 | ) | + | 8 | ( | y | − | 2500 | ) |
| = | 58 | y | − | 58 | × | 2500 | − | y | × | 1 50 | ( | y | − | 2500 | ) | + | 8 | ( | y | − | 2500 | ) |
| = | 58 | y | − | 145000 | − | y | × | 1 50 | ( | y | − | 2500 | ) | + | 8 | ( | y | − | 2500 | ) |
| = | 58 | y | − | 145000 | − | y | × | 1 50 | y | + | y | × | 1 50 | × | 2500 | + | 8 | ( | y | − | 2500 | ) |
| = | 58 | y | − | 145000 | − | y | × | 1 50 | y | + | y | × | 50 | + | 8 | ( | y | − | 2500 | ) |
| = | 108 | y | − | 145000 | − | y | × | 1 50 | y | + | 8 | ( | y | − | 2500 | ) |
| = | 108 | y | − | 145000 | − | y | × | 1 50 | y | + | 8 | y | − | 8 | × | 2500 |
| = | 108 | y | − | 145000 | − | y | × | 1 50 | y | + | 8 | y | − | 20000 |
| = | 116 | y | − | 165000 | − | y | × | 1 50 | y |
| 116 | y | − | 165000 | − | y | × | 1 50 | y | = | 5000 |