| X | − | 1 10 | X | − | 1 20 | X | − | 3 | = | 806 | + | 3 20 | × | 806 |
| Left side of the equation = | 17 20 | X | − | 3 |
17 20 | X | − | 3 | = | 806 | + | 3 20 | × | 806 |
| Right side of the equation = | 806 | + | 1209 10 |
| = | 9269 10 |
17 20 | X | − | 3 | = | 9269 10 |
17 20 | X | = | 9269 10 | + | 3 |
17 20 | X | = | 9299 10 |
| X | = | 9299 10 | ÷ | 17 20 |
| = | 9299 10 | × | 20 17 |
| = | 547 | × | 2 |
| X | = | 1094 |