| 68 | − | 5 | ( | x | − | 3 | ) | = | 64 | + | 3 | ( | 8 | − | 2 | x | ) |
| Left side of the equation = | 68 | − | 5 | x | + | 5 | × | 3 |
| = | 68 | − | 5 | x | + | 15 |
| = | 83 | − | 5 | x |
| 83 | − | 5 | x | = | 64 | + | 3 | ( | 8 | − | 2 | x | ) |
| Right side of the equation = | 64 | + | 3 | × | 8 | − | 3 | × | 2 | x |
| = | 64 | + | 24 | − | 6 | x |
| = | 88 | − | 6 | x |
| 83 | − | 5 | x | = | 88 | − | 6 | x |
| - | 5 | x | + | 6 | x | = | 88 | − | 83 |
| x | = | 88 | − | 83 |
| x | = | 88 | − | 83 |
| x | = | 5 |