| 525 | x | − | 2100 | − | 2500 | = | 450 | x | − | 24000 |
| Left side of the equation = | 525 | x | − | 4600 |
| 525 | x | − | 4600 | = | 450 | x | − | 24000 |
| 525 | x | − | 450 | x | = | - | 24000 | + | 4600 |
| 75 | x | = | - | 24000 | + | 4600 |
| 75 | x | = | - | 19400 |
| x | = | - | 19400 | ÷ | 75 |
| = | - | 19400 | × | 1 75 |
| = | - | 776 | × | 1 3 |
| x | = | - | 776 3 |
| x | = | - 258.666667 |