| X | − | 3 10 | X | − | 1 20 | X | − | 3 | = | 126 5 | + | 1 5 | × | 126 5 |
| Left side of the equation = | 13 20 | X | − | 3 |
13 20 | X | − | 3 | = | 126 5 | + | 1 5 | × | 126 5 |
| Right side of the equation = | 126 5 | + | 126 25 |
| = | 756 25 |
13 20 | X | − | 3 | = | 756 25 |
13 20 | X | = | 756 25 | + | 3 |
13 20 | X | = | 831 25 |
| X | = | 831 25 | ÷ | 13 20 |
| = | 831 25 | × | 20 13 |
| = | 831 5 | × | 4 13 |
| X | = | 3324 65 |
| X | = | 51.138462 |