| ( | x | − | 12 100 | ) | ÷ | 2 100 | = | 250 | ÷ | 300 |
| Left side of the equation = | x | × | 100 2 | − | 12 100 | × | 100 2 |
| = | x | × | 100 2 | − | 6 |
100 2 | x | − | 6 | = | 250 | ÷ | 300 |
| Right side of the equation = | 5 6 |
100 2 | x | − | 6 | = | 5 6 |
100 2 | x | = | 5 6 | + | 6 |
100 2 | x | = | 41 6 |
| x | = | 41 6 | ÷ | 100 2 |
| = | 41 6 | × | 2 100 |
| = | 41 3 | × | 1 100 |
| x | = | 41 300 |
| x | = | 0.136667 |