24 500 | + | 9 10 | ( | X | − | 24 500 | ) | = | 12 100 |
| Left side of the equation = | 24 500 | + | 9 10 | X | − | 9 10 | × | 24 500 |
| = | 24 500 | + | 9 10 | X | − | 27 625 |
| = | 3 625 | + | 9 10 | X |
3 625 | + | 9 10 | X | = | 12 100 |
9 10 | X | = | 12 100 | − | 3 625 |
9 10 | X | = | 72 625 |
| X | = | 72 625 | ÷ | 9 10 |
| = | 72 625 | × | 10 9 |
| = | 8 125 | × | 2 |
| X | = | 16 125 |
| X | = | 0.128 |