| ( | x | − | 5000 | ) | × | 1 10 | − | 210 | + | x | = | 10000 |
| Left side of the equation = | x | × | 1 10 | − | 5000 | × | 1 10 | − | 210 | + | x |
| = | x | × | 1 10 | − | 500 | − | 210 | + | x |
| = | 11 10 | x | − | 710 |
11 10 | x | − | 710 | = | 10000 |
11 10 | x | = | 10000 | + | 710 |
11 10 | x | = | 10710 |
| x | = | 10710 | ÷ | 11 10 |
| = | 10710 | × | 10 11 |
| x | = | 107100 11 |
| x | = | 9736.363636 |