16 100 | = | 13 100 | − | 18 100 | ( | 1 | − | X | ) |
| 方程右边 = | 13 100 | − | 18 100 | × | 1 | + | 18 100 | X |
| = | 13 100 | − | 9 50 | + | 18 100 | X |
| = | - | 1 20 | + | 18 100 | X |
16 100 | = | - | 1 20 | + | 18 100 | X |
| - | 18 100 | X | = | - | 1 20 | − | 16 100 |
| - | 18 100 | X | = | - | 21 100 |
21 100 | = | 18 100 | X |
18 100 | X | = | 21 100 |
| X | = | 21 100 | ÷ | 18 100 |
| = | 21 100 | × | 100 18 |
| = | 7 | × | 1 6 |
| X | = | 7 6 |
| X | = | 1.166667 |