1133 2500 | = | 137 1000 | X | − | 3 | + | 119 1000 | X | − | 2 | + | 269 1000 | X | − | 1 | − | 19 1000 |
| 方程右边 = | 21 40 | X | − | 6019 1000 |
1133 2500 | = | 21 40 | X | − | 6019 1000 |
| - | 21 40 | X | = | - | 6019 1000 | − | 1133 2500 |
| - | 21 40 | X | = | - | 32361 5000 |
32361 5000 | = | 21 40 | X |
21 40 | X | = | 32361 5000 |
| X | = | 32361 5000 | ÷ | 21 40 |
| = | 32361 5000 | × | 40 21 |
| = | 1541 125 | × | 1 |
| X | = | 1541 125 |
| X | = | 12.328 |