| 10 | ÷ | 4457 50 | + | 4 | ÷ | 6679 50 | + | 4 | ÷ | 50 | + | 20 | ÷ | 200 | + | X | ÷ | 1000 | + | ( | 593 10 | − | X | ) | ÷ | 1650 | = | 173 500 |
| 方程左边 = | 500 4457 | + | 200 6679 | + | 2 25 | + | 1 10 | + | X | × | 1 1000 | + | ( | 593 10 | − | X | ) | × | 1 1650 |
| = | 479459727 1488415150 | + | 1 1000 | X | + | ( | 593 10 | − | X | ) | × | 1 1650 |
479459727 1488415150 | + | 1 1000 | X | + | ( | 593 10 | − | X | ) | × | 1 1650 | = | 173 500 |
| 方程左边 = | 479459727 1488415150 | + | 1 1000 | X | + | 593 10 | × | 1 1650 | − | X | × | 1 1650 |
| = | 479459727 1488415150 | + | 1 1000 | X | + | 593 16500 | − | X | × | 1 1650 |
| X= | - | √46915409 √50000 |