| ( | 236 | + | 5 | X | ) | ÷ | ( | 51 | + | X | ) | = | 499 100 |
| Multiply both sides of the equation by: | ( | 51 | + | X | ) |
| ( | 236 | + | 5 | X | ) | = | 499 100 | ( | 51 | + | X | ) |
| 236 | + | 5 | X | = | 499 100 | ( | 51 | + | X | ) |
| 236 | + | 5 | X | = | 499 100 | × | 51 | + | 499 100 | X |
| 236 | + | 5 | X | = | 25449 100 | + | 499 100 | X |
| 5 | X | − | 499 100 | X | = | 25449 100 | − | 236 |
1 100 | X | = | 25449 100 | − | 236 |
1 100 | X | = | 1849 100 |
| X | = | 1849 100 | ÷ | 1 100 |
| = | 1849 100 | × | 100 |
| = | 1849 | × | 1 |
| X | = | 1849 |