| 17 | ( | 53 | − | 4 | x | ) | − | ( | 33 | × | 3 | x | + | 13 | x | ) | = | 1 |
| Left side of the equation = | 17 | × | 53 | − | 17 | × | 4 | x | − | ( | 33 | × | 3 | x | + | 13 | x | ) |
| = | 901 | − | 68 | x | − | ( | 33 | × | 3 | x | + | 13 | x | ) |
| = | 901 | − | 68 | x | − | 33 | × | 3 | x | − | 13 | x |
| = | 901 | − | 68 | x | − | 99 | x | − | 13 | x |
| = | 901 | − | 180 | x |
| 901 | − | 180 | x | = | 1 |
| - | 180 | x | = | 1 | − | 901 |
| - | 180 | x | = | - | 900 |
| 900 | = | 180 | x |
| 180 | x | = | 900 |
| x | = | 900 | ÷ | 180 |
| = | 900 | × | 1 180 |
| = | 5 | × | 1 |
| x | = | 5 |