| ( | 75 100 | − | 3939 5000 | ) | X | = | 5287 100 |
| Left side of the equation = | 75 100 | X | − | 3939 5000 | X |
| = | - | 189 5000 | X |
| - | 189 5000 | X | = | 5287 100 |
| - | 5287 100 | = | 189 5000 | X |
189 5000 | X | = | - | 5287 100 |
| X | = | - | 5287 100 | ÷ | 189 5000 |
| = | - | 5287 100 | × | 5000 189 |
| = | - | 5287 | × | 50 189 |
| X | = | - | 264350 189 |
| X | = | - 1398.677249 |