113 2 | X | ÷ | 113 100 | − | ( | 113 2 | X | ÷ | 113 100 | × | 13 100 | − | 6457 250 | X | ÷ | 11 10 | × | 1 10 | ) | × | 1 10 | − | 215231 250 | − | 6457 250 | X | ÷ | 11 10 | = | 0 |
| 方程左边 = | 50 | X | − | ( | 113 2 | X | ÷ | 113 100 | × | 13 100 | − | 6457 250 | X | ÷ | 11 10 | × | 1 10 | ) | × | 1 10 | − | 215231 250 | − | 587 25 | X |
| = | 663 25 | X | − | ( | 113 2 | X | ÷ | 113 100 | × | 13 100 | − | 6457 250 | X | ÷ | 11 10 | × | 1 10 | ) | × | 1 10 | − | 215231 250 |
663 25 | X | − | ( | 113 2 | X | ÷ | 113 100 | × | 13 100 | − | 6457 250 | X | ÷ | 11 10 | × | 1 10 | ) | × | 1 10 | − | 215231 250 | = | 0 |
| 方程左边 = | 663 25 | X | − | 113 2 | X | ÷ | 113 100 | × | 13 100 | × | 1 10 | + | 6457 250 | X | ÷ | 11 10 | × | 1 10 | × | 1 10 |
| = | 663 25 | X | − | 13 20 | X | + | 587 2500 | X | − | 215231 250 |
| = | 32631 1250 | X | − | 215231 250 |
32631 1250 | X | − | 215231 250 | = | 0 |
32631 1250 | X | = | 0 | + | 215231 250 |
32631 1250 | X | = | 215231 250 |
| X | = | 215231 250 | ÷ | 32631 1250 |
| = | 215231 250 | × | 1250 32631 |
| = | 215231 | × | 5 32631 |
| X | = | 1076155 32631 |
| X | = | 32.979529 |