| 5 | ( | 6 | + | X | ) | + | 4 | × | 1 | + | 2 | × | 3 | + | 0 | × | 2 | + | 1 | × | 1 | = | 22 5 | ( | 10 | + | X | ) |
| Left side of the equation = | 5 | ( | 6 | + | X | ) | + | 4 | + | 6 | + | 0 | + | 1 |
| = | 5 | ( | 6 | + | X | ) | + | 11 |
| 5 | ( | 6 | + | X | ) | + | 11 | = | 22 5 | ( | 10 | + | X | ) |
| Left side of the equation = | 5 | × | 6 | + | 5 | X | + | 11 |
| = | 30 | + | 5 | X | + | 11 |
| = | 41 | + | 5 | X |
| 41 | + | 5 | X | = | 22 5 | ( | 10 | + | X | ) |
| Right side of the equation = | 22 5 | × | 10 | + | 22 5 | X |
| = | 44 | + | 22 5 | X |
| 41 | + | 5 | X | = | 44 | + | 22 5 | X |
| 5 | X | − | 22 5 | X | = | 44 | − | 41 |
3 5 | X | = | 44 | − | 41 |
3 5 | X | = | 3 |
| X | = | 3 | ÷ | 3 5 |
| = | 3 | × | 5 3 |
| = | 1 | × | 5 |
| X | = | 5 |