| ( | 14 | + | x | ) | × | 12 | = | ( | 14 | − | x | ) | × | 16 |
| Left side of the equation = | 14 | × | 12 | + | x | × | 12 |
| = | 168 | + | x | × | 12 |
| 168 | + | 12 | x | = | ( | 14 | − | x | ) | × | 16 |
| Right side of the equation = | 14 | × | 16 | − | x | × | 16 |
| = | 224 | − | x | × | 16 |
| 168 | + | 12 | x | = | 224 | − | 16 | x |
| 12 | x | + | 16 | x | = | 224 | − | 168 |
| 28 | x | = | 224 | − | 168 |
| 28 | x | = | 56 |
| x | = | 56 | ÷ | 28 |
| = | 56 | × | 1 28 |
| = | 2 | × | 1 |
| x | = | 2 |