| ( | 829 25 | − | X | ) | × | 1 2 | + | X | × | 9 10 | = | 47 2 |
| Left side of the equation = | 829 25 | × | 1 2 | − | X | × | 1 2 | + | 9 10 | X |
| = | 829 50 | − | X | × | 1 2 | + | 9 10 | X |
| = | 829 50 | + | 2 5 | X |
829 50 | + | 2 5 | X | = | 47 2 |
2 5 | X | = | 47 2 | − | 829 50 |
2 5 | X | = | 173 25 |
| X | = | 173 25 | ÷ | 2 5 |
| = | 173 25 | × | 5 2 |
| = | 173 5 | × | 1 2 |
| X | = | 173 10 |
| X | = | 17.3 |