| X | − | ( | 171613 100 | + | 6000 | + | 6100 | + | X | − | 20000 | ) | × | 3 100 | = | 6500 |
| 方程左边 = | X | − | 171613 100 | × | 3 100 | − | 6000 | × | 3 100 | − | 6100 | × | 3 100 | − | X | × | 3 100 | + | 20000 | × | 3 100 |
| = | X | − | 514839 10000 | − | 180 | − | 183 | − | X | × | 3 100 | + | 600 |
| = | 97 100 | X | + | 1855161 10000 |
97 100 | X | + | 1855161 10000 | = | 6500 |
97 100 | X | = | 6500 | − | 1855161 10000 |
97 100 | X | = | 63144839 10000 |
| X | = | 63144839 10000 | ÷ | 97 100 |
| = | 63144839 10000 | × | 100 97 |
| = | 63144839 100 | × | 1 97 |
| X | = | 63144839 9700 |
| X | = | 6509.777216 |