| ( | X | − | 243 2 | ) | × | 10 | − | 3 5 | − | 3 5 | = | 2 |
| Left side of the equation = | ( | X | − | 243 2 | ) | × | 10 | − | 6 5 |
| ( | X | − | 243 2 | ) | × | 10 | − | 6 5 | = | 2 |
| Left side of the equation = | X | × | 10 | − | 243 2 | × | 10 | − | 6 5 |
| = | X | × | 10 | − | 1215 | − | 6 5 |
| = | 10 | X | − | 6081 5 |
| 10 | X | − | 6081 5 | = | 2 |
| 10 | X | = | 2 | + | 6081 5 |
| 10 | X | = | 6091 5 |
| X | = | 6091 5 | ÷ | 10 |
| = | 6091 5 | × | 1 10 |
| X | = | 6091 50 |
| X | = | 121.82 |