| X | ÷ | 126 | − | ( | 100 | − | X | ) | ÷ | 1300 | = | 1 10 |
| Left side of the equation = | 1 126 | X | − | 100 | × | 1 1300 | + | X | × | 1 1300 |
| = | 1 126 | X | − | 1 13 | + | X | × | 1 1300 |
| = | 713 81900 | X | − | 1 13 |
713 81900 | X | − | 1 13 | = | 1 10 |
713 81900 | X | = | 1 10 | + | 1 13 |
713 81900 | X | = | 23 130 |
| X | = | 23 130 | ÷ | 713 81900 |
| = | 23 130 | × | 81900 713 |
| = | 1 | × | 630 31 |
| X | = | 630 31 |
| X | = | 20.322581 |