| ( | X | − | 5000 | − | 22667 20 | ) | × | 3 100 | = | X | − | 10193 10 | − | 34761 4 |
| 方程左边 = | X | × | 3 100 | − | 5000 | × | 3 100 | − | 22667 20 | × | 3 100 |
| = | X | × | 3 100 | − | 150 | − | 68001 2000 |
| = | 3 100 | X | − | 368001 2000 |
3 100 | X | − | 368001 2000 | = | X | − | 10193 10 | − | 34761 4 |
| 方程右边 = | X | − | 194191 20 |
3 100 | X | − | 368001 2000 | = | X | − | 194191 20 |
3 100 | X | − | X | = | - | 194191 20 | + | 368001 2000 |
| - | 97 100 | X | = | - | 194191 20 | + | 368001 2000 |
| - | 97 100 | X | = | - | 19051099 2000 |
19051099 2000 | = | 97 100 | X |
97 100 | X | = | 19051099 2000 |
| X | = | 19051099 2000 | ÷ | 97 100 |
| = | 19051099 2000 | × | 100 97 |
| = | 19051099 20 | × | 1 97 |
| X | = | 19051099 1940 |
| X | = | 9820.154124 |