| 10 | ( | x | + | 2 | ) | = | 8 | ( | x | + | 8 | ) |
| Left side of the equation = | 10 | x | + | 10 | × | 2 |
| = | 10 | x | + | 20 |
| 10 | x | + | 20 | = | 8 | ( | x | + | 8 | ) |
| Right side of the equation = | 8 | x | + | 8 | × | 8 |
| = | 8 | x | + | 64 |
| 10 | x | + | 20 | = | 8 | x | + | 64 |
| 10 | x | − | 8 | x | = | 64 | − | 20 |
| 2 | x | = | 64 | − | 20 |
| 2 | x | = | 44 |
| x | = | 44 | ÷ | 2 |
| = | 44 | × | 1 2 |
| = | 22 | × | 1 |
| x | = | 22 |