| ( | x | − | 2 | ) | x | ( | 1 | − | 2 | x | ) | + | ( | 2 | x | − | 1 | ) | x | ( | 1 | − | 2 | x | ) | = | ( | 2 | x | − | 1 | ) |
| Left side of the equation = | x | x | ( | 1 | − | 2 | x | ) | − | 2 | x | ( | 1 | − | 2 | x | ) | + | ( | 2 | x | − | 1 | ) | x | ( | 1 | − | 2 | x | ) |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | ( | 1 | − | 2 | x | ) | + | ( | 2 | x | − | 1 | ) | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | × | 1 | + | 2 | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | + | 4 | x | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | + | 4 | x | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | + | 4 | x | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | + | 4 | x | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | + | 4 | x | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 2 | x | + | 4 | x | x |
| = | x | x | × | 1 | − | x | x | × | 2 | x | − | 3 | x | + | 4 | x | x |
| x | x | × | 1 | − | x | x | × | 2 | x | − | 3 | x | + | 4 | x | x | = | ( | 2 | x | − | 1 | ) |
| Right side of the equation = | 2 | x | − | 1 |
| x | x | × | 1 | − | x | x | × | 2 | x | − | 3 | x | + | 4 | x | x | = | 2 | x | − | 1 |
| x= | 1 2 |