| ( | x | − | 10 | ) | ( | 1 | + | 120 100 | ) | = | x | + | 2 |
| Left side of the equation = | x | ( | 1 | + | 120 100 | ) | − | 10 | ( | 1 | + | 120 100 | ) |
| = | x | × | 1 | + | x | × | 120 100 | − | 10 | ( | 1 | + | 120 100 | ) |
| = | 11 5 | x | − | 10 | ( | 1 | + | 120 100 | ) |
| = | 11 5 | x | − | 10 | × | 1 | − | 10 | × | 120 100 |
| = | 11 5 | x | − | 10 | − | 12 |
| = | 11 5 | x | − | 22 |
11 5 | x | − | 22 | = | x | + | 2 |
11 5 | x | − | x | = | 2 | + | 22 |
6 5 | x | = | 2 | + | 22 |
6 5 | x | = | 24 |
| x | = | 24 | ÷ | 6 5 |
| = | 24 | × | 5 6 |
| = | 4 | × | 5 |
| x | = | 20 |