| 10 | ( | x | − | 6 | ) | = | 3 | ( | x | + | 1 | ) |
| Left side of the equation = | 10 | x | − | 10 | × | 6 |
| = | 10 | x | − | 60 |
| 10 | x | − | 60 | = | 3 | ( | x | + | 1 | ) |
| Right side of the equation = | 3 | x | + | 3 | × | 1 |
| = | 3 | x | + | 3 |
| 10 | x | − | 60 | = | 3 | x | + | 3 |
| 10 | x | − | 3 | x | = | 3 | + | 60 |
| 7 | x | = | 3 | + | 60 |
| 7 | x | = | 63 |
| x | = | 63 | ÷ | 7 |
| = | 63 | × | 1 7 |
| = | 9 | × | 1 |
| x | = | 9 |