| ( | 5 | ( | 435 | + | X | ) | + | 248 | ) | ÷ | ( | 537 | + | X | ) | = | 23 5 |
| Multiply both sides of the equation by: | ( | 537 | + | X | ) |
| ( | 5 | ( | 435 | + | X | ) | + | 248 | ) | = | 23 5 | ( | 537 | + | X | ) |
| 5 | ( | 435 | + | X | ) | + | 248 | = | 23 5 | ( | 537 | + | X | ) |
| 5 | ( | 435 | + | X | ) | + | 248 | = | 23 5 | × | 537 | + | 23 5 | X |
| 5 | ( | 435 | + | X | ) | + | 248 | = | 12351 5 | + | 23 5 | X |
| 5 | × | 435 | + | 5 | X | + | 248 | = | 12351 5 | + | 23 5 | X |
| 2175 | + | 5 | X | + | 248 | = | 12351 5 | + | 23 5 | X |
| 2423 | + | 5 | X | = | 12351 5 | + | 23 5 | X |
| 5 | X | − | 23 5 | X | = | 12351 5 | − | 2423 |
2 5 | X | = | 12351 5 | − | 2423 |
2 5 | X | = | 236 5 |
| X | = | 236 5 | ÷ | 2 5 |
| = | 236 5 | × | 5 2 |
| = | 118 | × | 1 |
| X | = | 118 |