| ( | X | − | 305617 100 | ) | × | 191 250 | + | 305617 100 | = | 77953 25 |
| 方程左边 = | X | × | 191 250 | − | 305617 100 | × | 191 250 | + | 305617 100 |
| = | X | × | 191 250 | − | 58372847 25000 | + | 305617 100 |
| = | 191 250 | X | + | 18031403 25000 |
191 250 | X | + | 18031403 25000 | = | 77953 25 |
191 250 | X | = | 77953 25 | − | 18031403 25000 |
191 250 | X | = | 59921597 25000 |
| X | = | 59921597 25000 | ÷ | 191 250 |
| = | 59921597 25000 | × | 250 191 |
| = | 59921597 100 | × | 1 191 |
| X | = | 59921597 19100 |
| X | = | 3137.256387 |