| 28 | + | X | = | 93 100 | ( | 31 | + | X | ) |
| Right side of the equation = | 93 100 | × | 31 | + | 93 100 | X |
| = | 2883 100 | + | 93 100 | X |
| 28 | + | X | = | 2883 100 | + | 93 100 | X |
| X | − | 93 100 | X | = | 2883 100 | − | 28 |
7 100 | X | = | 2883 100 | − | 28 |
7 100 | X | = | 83 100 |
| X | = | 83 100 | ÷ | 7 100 |
| = | 83 100 | × | 100 7 |
| = | 83 | × | 1 7 |
| X | = | 83 7 |
| X | = | 11.857143 |