| X | ÷ | ( | 1 | + | 13 100 | ) | × | 13 100 | = | 2531 100 |
| 方程两边同时乘以: | ( | 1 | + | 13 100 | ) |
| X | × | 13 100 | = | 2531 100 | ( | 1 | + | 13 100 | ) |
| X | × | 13 100 | = | 2531 100 | × | 1 | + | 2531 100 | × | 13 100 |
| X | × | 13 100 | = | 2531 100 | + | 32903 10000 |
13 100 | X | = | 286003 10000 |
| X | = | 286003 10000 | ÷ | 13 100 |
| = | 286003 10000 | × | 100 13 |
| = | 286003 100 | × | 1 13 |
| X | = | 286003 1300 |
| X | = | 220.002308 |