| 2220 | = | 1037 | ( | 1 | + | x | ÷ | 100 | − | 39 25 | ) |
| 方程右边 = | 1037 | × | 1 | + | 1037 | x | ÷ | 100 | − | 1037 | × | 39 25 |
| = | 1037 | + | 1037 100 | x | − | 40443 25 |
| = | - | 14518 25 | + | 1037 100 | x |
| 2220 | = | - | 14518 25 | + | 1037 100 | x |
| - | 1037 100 | x | = | - | 14518 25 | − | 2220 |
| - | 1037 100 | x | = | - | 70018 25 |
70018 25 | = | 1037 100 | x |
1037 100 | x | = | 70018 25 |
| x | = | 70018 25 | ÷ | 1037 100 |
| = | 70018 25 | × | 100 1037 |
| = | 70018 | × | 4 1037 |
| x | = | 280072 1037 |
| x | = | 270.079074 |