| ( | 8763 10 | + | X | ) | = | 198609 250 | + | 9 25 | X |
| Left side of the equation = | 8763 10 | + | X |
8763 10 | + | X | = | 198609 250 | + | 9 25 | X |
| X | − | 9 25 | X | = | 198609 250 | − | 8763 10 |
16 25 | X | = | 198609 250 | − | 8763 10 |
16 25 | X | = | - | 10233 125 |
| X | = | - | 10233 125 | ÷ | 16 25 |
| = | - | 10233 125 | × | 25 16 |
| = | - | 10233 5 | × | 1 16 |
| X | = | - | 10233 80 |
| X | = | - 127.9125 |