| X | = | 10 | − | ( | 13 100 | + | 1 25 | ) | × | 149 5 | − | 937 10 | ÷ | 900 |
| 方程右边 = | 10 | − | ( | 13 100 | + | 1 25 | ) | × | 149 5 | − | 937 9000 |
| = | 89063 9000 | − | ( | 13 100 | + | 1 25 | ) | × | 149 5 |
| X | = | 89063 9000 | − | ( | 13 100 | + | 1 25 | ) | × | 149 5 |
| 方程右边 = | 89063 9000 | − | 13 100 | × | 149 5 | − | 1 25 | × | 149 5 |
| = | 89063 9000 | − | 1937 500 | − | 149 125 |
| = | 43469 9000 |
| X | = | 43469 9000 |