| 10000 | = | ( | x | × | 2 5 | × | 70 | + | x | × | 3 5 | × | 30 | ) | × | 9 10 | + | 18900 | − | 20286 |
| 方程右边 = | ( | x | × | 2 5 | × | 70 | + | x | × | 3 5 | × | 30 | ) | × | 9 10 | − | 1386 |
| 10000 | = | ( | x | × | 2 5 | × | 70 | + | x | × | 3 5 | × | 30 | ) | × | 9 10 | − | 1386 |
| 方程右边 = | x | × | 2 5 | × | 70 | × | 9 10 | + | x | × | 3 5 | × | 30 | × | 9 10 | − | 1386 |
| = | x | × | 126 5 | + | x | × | 81 5 | − | 1386 |
| = | 207 5 | x | − | 1386 |
| 10000 | = | 207 5 | x | − | 1386 |
| - | 207 5 | x | = | - | 1386 | − | 10000 |
| - | 207 5 | x | = | - | 11386 |
| 11386 | = | 207 5 | x |
207 5 | x | = | 11386 |
| x | = | 11386 | ÷ | 207 5 |
| = | 11386 | × | 5 207 |
| x | = | 56930 207 |
| x | = | 275.024155 |