| X | + | 2 25 | X | + | ( | X | + | 2 25 | X | ) | × | 17 200 | = | 8727 100 |
| 方程左边 = | 27 25 | X | + | ( | X | + | 2 25 | X | ) | × | 17 200 |
27 25 | X | + | ( | X | + | 2 25 | X | ) | × | 17 200 | = | 8727 100 |
| 方程左边 = | 27 25 | X | + | X | × | 17 200 | + | 2 25 | X | × | 17 200 |
| = | 27 25 | X | + | X | × | 17 200 | + | 17 2500 | X |
| = | 5859 5000 | X |
5859 5000 | X | = | 8727 100 |
| X | = | 8727 100 | ÷ | 5859 5000 |
| = | 8727 100 | × | 5000 5859 |
| = | 2909 | × | 50 1953 |
| X | = | 145450 1953 |
| X | = | 74.475166 |