| X | + | 15 100 | X | + | ( | X | + | 15 100 | X | ) | × | 13 100 | = | 2576 |
| 方程左边 = | 23 20 | X | + | ( | X | + | 15 100 | X | ) | × | 13 100 |
23 20 | X | + | ( | X | + | 15 100 | X | ) | × | 13 100 | = | 2576 |
| 方程左边 = | 23 20 | X | + | X | × | 13 100 | + | 15 100 | X | × | 13 100 |
| = | 23 20 | X | + | X | × | 13 100 | + | 39 2000 | X |
| = | 2599 2000 | X |
2599 2000 | X | = | 2576 |
| X | = | 2576 | ÷ | 2599 2000 |
| = | 2576 | × | 2000 2599 |
| = | 112 | × | 2000 113 |
| X | = | 224000 113 |
| X | = | 1982.300885 |