| ( | 67 | − | X | ) | × | 15 | ÷ | 23 | = | 58 | − | X |
| Left side of the equation = | ( | 67 | − | X | ) | × | 15 23 |
| ( | 67 | − | X | ) | × | 15 23 | = | 58 | − | X |
| Left side of the equation = | 67 | × | 15 23 | − | X | × | 15 23 |
| = | 1005 23 | − | X | × | 15 23 |
1005 23 | − | 15 23 | X | = | 58 | − | X |
| - | 15 23 | X | + | X | = | 58 | − | 1005 23 |
| - | - | 8 23 | X | = | 58 | − | 1005 23 |
| - | - | 8 23 | X | = | 329 23 |
| - | 329 23 | = | - | 8 23 | X |
| - | 8 23 | X | = | - | 329 23 |
| X | = | 329 23 | ÷ | 8 23 |
| = | 329 23 | × | 23 8 |
| = | 329 | × | 1 8 |
| X | = | 329 8 |
| X | = | 41.125 |