| 580 | ÷ | ( | 4421 5000 | X | − | 197 5 | ) | = | 100 |
| Multiply both sides of the equation by: | ( | 4421 5000 | X | − | 197 5 | ) |
| 580 | = | 100 | ( | 4421 5000 | X | − | 197 5 | ) |
| 580 | = | 100 | × | 4421 5000 | X | − | 100 | × | 197 5 |
| 580 | = | 4421 50 | X | − | 3940 |
| - | 4421 50 | X | = | - | 3940 | − | 580 |
| - | 4421 50 | X | = | - | 4520 |
| 4520 | = | 4421 50 | X |
4421 50 | X | = | 4520 |
| X | = | 4520 | ÷ | 4421 50 |
| = | 4520 | × | 50 4421 |
| X | = | 226000 4421 |
| X | = | 51.119656 |