| 250 | − | x | − | 60 | = | x | − | 60 | ÷ | 2 |
| Left side of the equation = | 190 | − | x |
| 190 | − | x | = | x | − | 60 | ÷ | 2 |
| Right side of the equation = | x | − | 30 |
| 190 | − | x | = | x | − | 30 |
| - | x | − | x | = | - | 30 | − | 190 |
| - | 2 | x | = | - | 30 | − | 190 |
| - | 2 | x | = | - | 220 |
| 220 | = | 2 | x |
| 2 | x | = | 220 |
| x | = | 220 | ÷ | 2 |
| = | 220 | × | 1 2 |
| = | 110 | × | 1 |
| x | = | 110 |