| X | + | 4 | + | 19 | + | 20 100 | X | + | ( | X | + | 20 100 | X | ) | × | 9 100 | = | 1670 |
| 方程左边 = | 6 5 | X | + | 23 | + | ( | X | + | 20 100 | X | ) | × | 9 100 |
6 5 | X | + | 23 | + | ( | X | + | 20 100 | X | ) | × | 9 100 | = | 1670 |
| 方程左边 = | 6 5 | X | + | 23 | + | X | × | 9 100 | + | 20 100 | X | × | 9 100 |
| = | 6 5 | X | + | 23 | + | X | × | 9 100 | + | 9 500 | X |
| = | 327 250 | X | + | 23 |
327 250 | X | + | 23 | = | 1670 |
327 250 | X | = | 1670 | − | 23 |
327 250 | X | = | 1647 |
| X | = | 1647 | ÷ | 327 250 |
| = | 1647 | × | 250 327 |
| = | 549 | × | 250 109 |
| X | = | 137250 109 |
| X | = | 1259.174312 |