| 49 | x | − | 14 | x | × | 3 | + | x | × | 5 | = | 12 | x | × | 2 | − | 2 | x | × | 4 | − | 24 | x | + | 4 | x | × | 3 | − | 12 |
| Left side of the equation = | 49 | x | − | 42 | x | + | x | × | 5 |
| = | 12 | x |
| 12 | x | = | 12 | x | × | 2 | − | 2 | x | × | 4 | − | 24 | x | + | 4 | x | × | 3 | − | 12 |
| Right side of the equation = | 24 | x | − | 8 | x | − | 24 | x | + | 12 | x | − | 12 | + | 4 | x |
| = | 8 | x | − | 12 |
| 12 | x | = | 8 | x | − | 12 |
| 12 | x | − | 8 | x | = | - | 12 |
| 4 | x | = | - | 12 |
| x | = | - | 12 | ÷ | 4 |
| = | - | 12 | × | 1 4 |
| = | - | 3 | × | 1 |
| x | = | - | 3 |