| ( | 6000 | − | 3 100 | x | ) | x | = | 18750000 | + | ( | 6000 | − | 9 50 | x | ) |
| Left side of the equation = | 6000 | x | − | 3 100 | x | x |
| 6000 | x | − | 3 100 | x | x | = | 18750000 | + | ( | 6000 | − | 9 50 | x | ) |
| Right side of the equation = | 18750000 | + | 6000 | − | 9 50 | x |
| = | 18756000 | − | 9 50 | x |
| 6000 | x | − | 3 100 | x | x | = | 18756000 | − | 9 50 | x |