| ( | 2000 | x | − | 40000 | ) | x | ÷ | ( | 40000 | × | 12 | ) | = | 6 25 |
| Multiply both sides of the equation by: | ( | 40000 | × | 12 | ) |
| ( | 2000 | x | − | 40000 | ) | x | = | 6 25 | ( | 40000 | × | 12 | ) |
| 2000 | x | x | − | 40000 | x | = | 6 25 | ( | 40000 | × | 12 | ) |
| 2000 | x | x | − | 40000 | x | = | 6 25 | × | 40000 | × | 12 |
| 2000 | x | x | − | 40000 | x | = | 115200 |