| 45000 | = | 2000 | ( | 180 | − | x | ) | − | 56000 |
| Right side of the equation = | 2000 | × | 180 | − | 2000 | x | − | 56000 |
| = | 360000 | − | 2000 | x | − | 56000 |
| = | 304000 | − | 2000 | x |
| 45000 | = | 304000 | − | 2000 | x |
| 2000 | x | = | 304000 | − | 45000 |
| 2000 | x | = | 259000 |
| x | = | 259000 | ÷ | 2000 |
| = | 259000 | × | 1 2000 |
| = | 259 | × | 1 2 |
| x | = | 259 2 |
| x | = | 129.5 |