| ( | ( | 35700 | − | X | ) | ÷ | 51 | ) | × | 2 | = | ( | 217000 | − | X | ) | ÷ | 317 |
| Left side of the equation = | ( | 35700 | − | X | ) | ÷ | 51 | × | 2 |
| = | ( | 35700 | − | X | ) | × | 2 51 |
| = | 35700 | × | 2 51 | − | X | × | 2 51 |
| = | 1400 | − | X | × | 2 51 |
| 1400 | − | 2 51 | X | = | ( | 217000 | − | X | ) | ÷ | 317 |
| Right side of the equation = | 217000 | × | 1 317 | − | X | × | 1 317 |
| = | 217000 317 | − | X | × | 1 317 |
| 1400 | − | 2 51 | X | = | 217000 317 | − | 1 317 | X |
| - | 2 51 | X | + | 1 317 | X | = | 217000 317 | − | 1400 |
| - | 583 16167 | X | = | 217000 317 | − | 1400 |
| - | 583 16167 | X | = | - | 226800 317 |
226800 317 | = | 583 16167 | X |
583 16167 | X | = | 226800 317 |
| X | = | 226800 317 | ÷ | 583 16167 |
| = | 226800 317 | × | 16167 583 |
| X | = | 3666675600 184811 |
| X | = | 11566800 583 |
| X | = | 19840.137221 |