| 2220 | ÷ | ( | 1 | + | x | ÷ | 100 | − | 89 100 | ) | = | 1052 |
| 方程两边同时乘以: | ( | 1 | + | x | ÷ | 100 | − | 89 100 | ) |
| 2220 | = | 1052 | ( | 1 | + | x | ÷ | 100 | − | 89 100 | ) |
| 2220 | = | 1052 | × | 1 | + | 1052 | x | ÷ | 100 | − | 1052 | × | 89 100 |
| 2220 | = | 1052 | + | 263 25 | x | − | 23407 25 |
| 2220 | = | 2893 25 | + | 263 25 | x |
| - | 263 25 | x | = | 2893 25 | − | 2220 |
| - | 263 25 | x | = | - | 52607 25 |
52607 25 | = | 263 25 | x |
263 25 | x | = | 52607 25 |
| x | = | 52607 25 | ÷ | 263 25 |
| = | 52607 25 | × | 25 263 |
| = | 52607 | × | 1 263 |
| x | = | 52607 263 |
| x | = | 200.026616 |