| 3000 | ( | x | − | 360 | ) | = | 3600 | ( | x | − | 552 | ) |
| Left side of the equation = | 3000 | x | − | 3000 | × | 360 |
| = | 3000 | x | − | 1080000 |
| 3000 | x | − | 1080000 | = | 3600 | ( | x | − | 552 | ) |
| Right side of the equation = | 3600 | x | − | 3600 | × | 552 |
| = | 3600 | x | − | 1987200 |
| 3000 | x | − | 1080000 | = | 3600 | x | − | 1987200 |
| 3000 | x | − | 3600 | x | = | - | 1987200 | + | 1080000 |
| - | 600 | x | = | - | 1987200 | + | 1080000 |
| - | 600 | x | = | - | 907200 |
| 907200 | = | 600 | x |
| 600 | x | = | 907200 |
| x | = | 907200 | ÷ | 600 |
| = | 907200 | × | 1 600 |
| = | 1512 | × | 1 |
| x | = | 1512 |