| ( | 5 | − | 1 20 | ) | x | + | ( | - | 5 | − | 1 20 | ) | ( | 1 | − | x | ) | = | 0 |
| Left side of the equation = | 5 | x | − | 1 20 | x | + | ( | - | 5 | − | 1 20 | ) | ( | 1 | − | x | ) |
| = | 99 20 | x | + | ( | - | 5 | − | 1 20 | ) | ( | 1 | − | x | ) |
| = | 99 20 | x | − | 5 | ( | 1 | − | x | ) | − | 1 20 | ( | 1 | − | x | ) |
| = | 99 20 | x | − | 5 | × | 1 | + | 5 | x | − | 1 20 | ( | 1 | − | x | ) |
| = | 99 20 | x | − | 5 | + | 5 | x | − | 1 20 | ( | 1 | − | x | ) |
| = | 199 20 | x | − | 5 | − | 1 20 | ( | 1 | − | x | ) |
| = | 199 20 | x | − | 5 | − | 1 20 | × | 1 | + | 1 20 | x |
| = | 199 20 | x | − | 5 | − | 1 20 | + | 1 20 | x |
| = | 10 | x | − | 101 20 |
| 10 | x | − | 101 20 | = | 0 |
| 10 | x | = | 0 | + | 101 20 |
| 10 | x | = | 101 20 |
| x | = | 101 20 | ÷ | 10 |
| = | 101 20 | × | 1 10 |
| x | = | 101 200 |
| x | = | 0.505 |