| ( | 37 100 | − | x | ) | ( | 17 50 | − | x | ) | = | 33 100 | × | 33 100 |
| Left side of the equation = | 37 100 | ( | 17 50 | − | x | ) | − | x | ( | 17 50 | − | x | ) |
| = | 37 100 | × | 17 50 | − | 37 100 | x | − | x | ( | 17 50 | − | x | ) |
| = | 629 5000 | − | 37 100 | x | − | x | ( | 17 50 | − | x | ) |
| = | 629 5000 | − | 37 100 | x | − | x | × | 17 50 | + | x | x |
| = | 629 5000 | − | 71 100 | x | + | x | x |
629 5000 | − | 71 100 | x | + | x | x | = | 33 100 | × | 33 100 |
| Right side of the equation = | 1089 10000 |
629 5000 | − | 71 100 | x | + | x | x | = | 1089 10000 |