| 17 | ( | 23 | x | + | 25 | ) | − | 28252 | = | 4 | x | + | 37 |
| Left side of the equation = | 17 | × | 23 | x | + | 17 | × | 25 | − | 28252 |
| = | 391 | x | + | 425 | − | 28252 |
| = | 391 | x | − | 27827 |
| 391 | x | − | 27827 | = | 4 | x | + | 37 |
| 391 | x | − | 4 | x | = | 37 | + | 27827 |
| 387 | x | = | 37 | + | 27827 |
| 387 | x | = | 27864 |
| x | = | 27864 | ÷ | 387 |
| = | 27864 | × | 1 387 |
| = | 72 | × | 1 |
| x | = | 72 |