| ( | 7871 20 | − | x | ) | ÷ | x | = | 4049 2500 |
| Multiply both sides of the equation by: | x |
| ( | 7871 20 | − | x | ) | = | 4049 2500 | x |
7871 20 | − | x | = | 4049 2500 | x |
| - | x | − | 4049 2500 | x | = | - | 7871 20 |
| - | 6549 2500 | x | = | - | 7871 20 |
7871 20 | = | 6549 2500 | x |
6549 2500 | x | = | 7871 20 |
| x | = | 7871 20 | ÷ | 6549 2500 |
| = | 7871 20 | × | 2500 6549 |
| = | 7871 | × | 125 6549 |
| x | = | 983875 6549 |
| x | = | 150.23286 |