| ( | 8763 10 | + | X | ) | = | 198609 250 | + | 11 | X |
| Left side of the equation = | 8763 10 | + | X |
8763 10 | + | X | = | 198609 250 | + | 11 | X |
| X | − | 11 | X | = | 198609 250 | − | 8763 10 |
| - | 10 | X | = | 198609 250 | − | 8763 10 |
| - | 10 | X | = | - | 10233 125 |
10233 125 | = | 10 | X |
| 10 | X | = | 10233 125 |
| X | = | 10233 125 | ÷ | 10 |
| = | 10233 125 | × | 1 10 |
| X | = | 10233 1250 |
| X | = | 8.1864 |