| ( | 5 | ( | 444 | + | X | ) | + | 249 | ) | ÷ | ( | 546 | + | X | ) | = | 23 5 |
| Multiply both sides of the equation by: | ( | 546 | + | X | ) |
| ( | 5 | ( | 444 | + | X | ) | + | 249 | ) | = | 23 5 | ( | 546 | + | X | ) |
| 5 | ( | 444 | + | X | ) | + | 249 | = | 23 5 | ( | 546 | + | X | ) |
| 5 | ( | 444 | + | X | ) | + | 249 | = | 23 5 | × | 546 | + | 23 5 | X |
| 5 | ( | 444 | + | X | ) | + | 249 | = | 12558 5 | + | 23 5 | X |
| 5 | × | 444 | + | 5 | X | + | 249 | = | 12558 5 | + | 23 5 | X |
| 2220 | + | 5 | X | + | 249 | = | 12558 5 | + | 23 5 | X |
| 2469 | + | 5 | X | = | 12558 5 | + | 23 5 | X |
| 5 | X | − | 23 5 | X | = | 12558 5 | − | 2469 |
2 5 | X | = | 12558 5 | − | 2469 |
2 5 | X | = | 213 5 |
| X | = | 213 5 | ÷ | 2 5 |
| = | 213 5 | × | 5 2 |
| = | 213 | × | 1 2 |
| X | = | 213 2 |
| X | = | 106.5 |