| 5 | ( | 2 | x | − | 18 | ) | = | 3 | ( | 3 | x | − | 22 | ) |
| Left side of the equation = | 5 | × | 2 | x | − | 5 | × | 18 |
| = | 10 | x | − | 90 |
| 10 | x | − | 90 | = | 3 | ( | 3 | x | − | 22 | ) |
| Right side of the equation = | 3 | × | 3 | x | − | 3 | × | 22 |
| = | 9 | x | − | 66 |
| 10 | x | − | 90 | = | 9 | x | − | 66 |
| 10 | x | − | 9 | x | = | - | 66 | + | 90 |
| x | = | - | 66 | + | 90 |
| x | = | - | 66 | + | 90 |
| x | = | 24 |