48 25 | × | 220 | + | ( | X | − | 220 | ) | × | 33 10 | + | 17 10 | × | 9 10 | X | = | 2001 2 |
| Left side of the equation = | 2112 5 | + | ( | X | − | 220 | ) | × | 33 10 | + | 153 100 | X |
2112 5 | + | ( | X | − | 220 | ) | × | 33 10 | + | 153 100 | X | = | 2001 2 |
| Left side of the equation = | 2112 5 | + | X | × | 33 10 | − | 220 | × | 33 10 | + | 153 100 | X |
| = | 2112 5 | + | X | × | 33 10 | − | 726 | + | 153 100 | X |
| = | - | 1518 5 | + | 483 100 | X |
| - | 1518 5 | + | 483 100 | X | = | 2001 2 |
483 100 | X | = | 2001 2 | + | 1518 5 |
483 100 | X | = | 13041 10 |
| X | = | 13041 10 | ÷ | 483 100 |
| = | 13041 10 | × | 100 483 |
| = | 27 | × | 10 |
| X | = | 270 |