| ( | 10325 | + | 20 | + | X | ) | × | 31 1000 | = | 9 5 | X |
| 方程左边 = | 10325 | × | 31 1000 | + | 20 | × | 31 1000 | + | X | × | 31 1000 |
| = | 12803 40 | + | 31 50 | + | X | × | 31 1000 |
| = | 64139 200 | + | 31 1000 | X |
64139 200 | + | 31 1000 | X | = | 9 5 | X |
31 1000 | X | − | 9 5 | X | = | - | 64139 200 |
| - | 1769 1000 | X | = | - | 64139 200 |
64139 200 | = | 1769 1000 | X |
1769 1000 | X | = | 64139 200 |
| X | = | 64139 200 | ÷ | 1769 1000 |
| = | 64139 200 | × | 1000 1769 |
| = | 64139 | × | 5 1769 |
| X | = | 320695 1769 |
| X | = | 181.286037 |