| ( | 215373 25 | + | X | ) | × | 3 100 | = | X |
| Left side of the equation = | 215373 25 | × | 3 100 | + | X | × | 3 100 |
| = | 646119 2500 | + | X | × | 3 100 |
646119 2500 | + | 3 100 | X | = | X |
3 100 | X | − | X | = | - | 646119 2500 |
| - | 97 100 | X | = | - | 646119 2500 |
646119 2500 | = | 97 100 | X |
97 100 | X | = | 646119 2500 |
| X | = | 646119 2500 | ÷ | 97 100 |
| = | 646119 2500 | × | 100 97 |
| = | 646119 25 | × | 1 97 |
| X | = | 646119 2425 |
| X | = | 266.440825 |