| 25 | + | 2 | + | 4 | + | 1 | + | X | × | 3 25 | + | 411 10 | + | 30 | + | 8 | + | 5 | = | X |
| 方程左边 = | 1161 10 | + | 3 25 | X |
1161 10 | + | 3 25 | X | = | X |
3 25 | X | − | X | = | - | 1161 10 |
| - | 22 25 | X | = | - | 1161 10 |
1161 10 | = | 22 25 | X |
22 25 | X | = | 1161 10 |
| X | = | 1161 10 | ÷ | 22 25 |
| = | 1161 10 | × | 25 22 |
| = | 1161 2 | × | 5 22 |
| X | = | 5805 44 |
| X | = | 131.931818 |