| 36 | ÷ | ( | x | + | 1 4 | x | ) | − | 18 | ÷ | x | = | 6 |
| 方程两边同时乘以: | ( | x | + | 1 4 | x | ) |
| 36 | − | 18 | ÷ | x | × | ( | x | + | 1 4 | x | ) | = | 6 | ( | x | + | 1 4 | x | ) |
| 36 | − | 18 | ÷ | x | × | x | − | 18 | ÷ | x | × | 1 4 | x | = | 6 | ( | x | + | 1 4 | x | ) |
| 36 | − | 18 | ÷ | x | × | x | − | 18 | ÷ | x | × | 1 4 | x | = | 6 | x | + | 6 | × | 1 4 | x |
| 36 | − | 18 | ÷ | x | × | x | − | 9 2 | ÷ | x | × | x | = | 6 | x | + | 3 2 | x |
| 36 | − | 18 | ÷ | x | × | x | − | 9 2 | ÷ | x | × | x | = | 15 2 | x |
| - | 15 2 | x | = | - | 36 | + | 18 | ÷ | 1 | × | 1 | + | 9 2 | ÷ | 1 | × | 1 |
| - | 15 2 | x | = | - | 36 | + | 18 | + | 9 2 |
| - | 15 2 | x | = | - | 27 2 |
27 2 | = | 15 2 | x |
15 2 | x | = | 27 2 |
| x | = | 27 2 | ÷ | 15 2 |
| = | 27 2 | × | 2 15 |
| = | 9 | × | 1 5 |
| x | = | 9 5 |
| x | = | 1.8 |