| 8 | ( | 6 | ÷ | ( | x | − | 6 | ) | + | 4 | ) | + | 10 | = | 18 |
| 8 | × | 6 | ÷ | ( | x | − | 6 | ) | + | 8 | × | 4 | + | 10 | = | 18 |
| 48 | ÷ | ( | x | − | 6 | ) | + | 32 | + | 10 | = | 18 |
| 48 | ÷ | ( | x | − | 6 | ) | + | 42 | = | 18 |
| 方程两边同时乘以: | ( | x | − | 6 | ) |
| 48 | + | 42 | ( | x | − | 6 | ) | = | 18 | ( | x | − | 6 | ) |
| 48 | + | 42 | x | − | 42 | × | 6 | = | 18 | ( | x | − | 6 | ) |
| 48 | + | 42 | x | − | 42 | × | 6 | = | 18 | x | − | 18 | × | 6 |
| 48 | + | 42 | x | − | 252 | = | 18 | x | − | 108 |
| - | 204 | + | 42 | x | = | 18 | x | − | 108 |
| 42 | x | − | 18 | x | = | - | 108 | + | 204 |
| 24 | x | = | - | 108 | + | 204 |
| 24 | x | = | 96 |
| x | = | 96 | ÷ | 24 |
| = | 96 | × | 1 24 |
| = | 4 | × | 1 |
| x | = | 4 |