| 3 | x | × | 33 | + | x | × | 13 | + | 1 | = | ( | 53 | − | 4 | x | ) | × | 17 |
| Left side of the equation = | 99 | x | + | x | × | 13 | + | 1 |
| = | 112 | x | + | 1 |
| 112 | x | + | 1 | = | ( | 53 | − | 4 | x | ) | × | 17 |
| Right side of the equation = | 53 | × | 17 | − | 4 | x | × | 17 |
| = | 901 | − | 68 | x |
| 112 | x | + | 1 | = | 901 | − | 68 | x |
| 112 | x | + | 68 | x | = | 901 | − | 1 |
| 180 | x | = | 901 | − | 1 |
| 180 | x | = | 900 |
| x | = | 900 | ÷ | 180 |
| = | 900 | × | 1 180 |
| = | 5 | × | 1 |
| x | = | 5 |