| x | − | ( | x | − | 5000 | ) | × | 1 10 | − | 210 | = | 10000 |
| Left side of the equation = | x | − | x | × | 1 10 | + | 5000 | × | 1 10 | − | 210 |
| = | x | − | x | × | 1 10 | + | 500 | − | 210 |
| = | 9 10 | x | + | 290 |
9 10 | x | + | 290 | = | 10000 |
9 10 | x | = | 10000 | − | 290 |
9 10 | x | = | 9710 |
| x | = | 9710 | ÷ | 9 10 |
| = | 9710 | × | 10 9 |
| x | = | 97100 9 |
| x | = | 10788.888889 |