| 1300 | + | X | − | ( | 1300 | + | X | ) | × | 9 2500 | = | 5049 2 |
| Left side of the equation = | 1300 | + | X | − | 1300 | × | 9 2500 | − | X | × | 9 2500 |
| = | 1300 | + | X | − | 117 25 | − | X | × | 9 2500 |
| = | 32383 25 | + | 2491 2500 | X |
32383 25 | + | 2491 2500 | X | = | 5049 2 |
2491 2500 | X | = | 5049 2 | − | 32383 25 |
2491 2500 | X | = | 61459 50 |
| X | = | 61459 50 | ÷ | 2491 2500 |
| = | 61459 50 | × | 2500 2491 |
| = | 61459 | × | 50 2491 |
| X | = | 3072950 2491 |
| X | = | 1233.621036 |