| X | ( | 1 | + | 35 100 | ) | × | 1 100 | × | 80 100 | − | 370 | = | X |
| 方程左边 = | X | ( | 1 | + | 35 100 | ) | × | 1 125 | − | 370 |
| X | ( | 1 | + | 35 100 | ) | × | 1 125 | − | 370 | = | X |
| 方程左边 = | X | × | 1 | × | 1 125 | + | X | × | 35 100 | × | 1 125 | − | 370 |
| = | X | × | 1 125 | + | X | × | 7 2500 | − | 370 |
| = | 27 2500 | X | − | 370 |
27 2500 | X | − | 370 | = | X |
27 2500 | X | − | X | = | 370 |
| - | 2473 2500 | X | = | 370 |
| - | 370 | = | 2473 2500 | X |
2473 2500 | X | = | - | 370 |
| X | = | - | 370 | ÷ | 2473 2500 |
| = | - | 370 | × | 2500 2473 |
| X | = | - | 925000 2473 |
| X | = | - 374.039628 |