| x | x | = | ( | 1 10 | − | x | ) | ( | 1 10 | − | x | ) |
| Right side of the equation = | 1 10 | ( | 1 10 | − | x | ) | − | x | ( | 1 10 | − | x | ) |
| = | 1 10 | × | 1 10 | − | 1 10 | x | − | x | ( | 1 10 | − | x | ) |
| = | 1 100 | − | 1 10 | x | − | x | ( | 1 10 | − | x | ) |
| = | 1 100 | − | 1 10 | x | − | x | × | 1 10 | + | x | x |
| = | 1 100 | − | 1 5 | x | + | x | x |
| x | x | = | 1 100 | − | 1 5 | x | + | x | x |
| x= | 1 20 |