| 1026 | ÷ | ( | x | ÷ | 5 2 | ) | = | ( | 1026 | − | 81 | ) | ÷ | x | + | 9 |
| 方程两边同时乘以: | ( | x | ÷ | 5 2 | ) |
| 1026 | = | ( | 1026 | − | 81 | ) | ÷ | 1 | × | ( | 1 | ÷ | 5 2 | ) | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 1026 | ÷ | 1 | × | ( | 1 | ÷ | 5 2 | ) | − | 81 | ÷ | 1 | × | ( | 1 | ÷ | 5 2 | ) | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 1026 | ( | 1 | ÷ | 5 2 | ) | − | 81 | ( | 1 | ÷ | 5 2 | ) | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 1026 | × | 1 | ÷ | 5 2 | − | 81 | ( | 1 | ÷ | 5 2 | ) | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 2052 5 | − | 81 | ( | 1 | ÷ | 5 2 | ) | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 2052 5 | − | 81 | × | 1 | ÷ | 5 2 | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 2052 5 | − | 162 5 | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 378 | + | 9 | ( | x | ÷ | 5 2 | ) |
| 1026 | = | 378 | + | 9 | x | ÷ | 5 2 |
| 1026 | = | 378 | + | 18 5 | x |
| - | 18 5 | x | = | 378 | − | 1026 |
| - | 18 5 | x | = | - | 648 |
| 648 | = | 18 5 | x |
18 5 | x | = | 648 |
| x | = | 648 | ÷ | 18 5 |
| = | 648 | × | 5 18 |
| = | 36 | × | 5 |
| x | = | 180 |