| X | − | 5 | ÷ | 9 | × | X | − | 4 | = | 2 | ÷ | 5 | × | X | + | 6 |
| Left side of the equation = | X | − | 5 9 | X | − | 4 |
| = | 4 9 | X | − | 4 |
4 9 | X | − | 4 | = | 2 | ÷ | 5 | × | X | + | 6 |
| Right side of the equation = | 2 5 | X | + | 6 |
4 9 | X | − | 4 | = | 2 5 | X | + | 6 |
4 9 | X | − | 2 5 | X | = | 6 | + | 4 |
2 45 | X | = | 6 | + | 4 |
2 45 | X | = | 10 |
| X | = | 10 | ÷ | 2 45 |
| = | 10 | × | 45 2 |
| = | 5 | × | 45 |
| X | = | 225 |