| 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | × | 3 | ÷ | 4 | + | 25 | = | 1 | ÷ | 2 | × | X |
| Left side of the equation = | 1 6 | X | + | 1 8 | X | + | 25 |
| = | 7 24 | X | + | 25 |
7 24 | X | + | 25 | = | 1 | ÷ | 2 | × | X |
| Right side of the equation = | 1 2 | X |
7 24 | X | + | 25 | = | 1 2 | X |
7 24 | X | − | 1 2 | X | = | - | 25 |
| - | 5 24 | X | = | - | 25 |
| 25 | = | 5 24 | X |
5 24 | X | = | 25 |
| X | = | 25 | ÷ | 5 24 |
| = | 25 | × | 24 5 |
| = | 5 | × | 24 |
| X | = | 120 |