17 20 | × | 42 | X | + | 3 20 | × | 15 | X | = | 17620 | × | 53 100 |
| Left side of the equation = | 357 10 | X | + | 9 4 | X |
| = | 759 20 | X |
759 20 | X | = | 17620 | × | 53 100 |
| Right side of the equation = | 46693 5 |
759 20 | X | = | 46693 5 |
| X | = | 46693 5 | ÷ | 759 20 |
| = | 46693 5 | × | 20 759 |
| = | 46693 | × | 4 759 |
| X | = | 186772 759 |
| X | = | 246.076416 |