| 8 | ÷ | ( | x | + | 4 | ) | = | 15 | ÷ | 16 |
| 方程两边同时乘以: | ( | x | + | 4 | ) |
| 8 | = | 15 | ÷ | 16 | × | ( | x | + | 4 | ) |
| 8 | = | 15 | ÷ | 16 | × | x | + | 15 | ÷ | 16 | × | 4 |
| 8 | = | 15 16 | x | + | 15 4 |
| - | 15 16 | x | = | 15 4 | − | 8 |
| - | 15 16 | x | = | - | 17 4 |
17 4 | = | 15 16 | x |
15 16 | x | = | 17 4 |
| x | = | 17 4 | ÷ | 15 16 |
| = | 17 4 | × | 16 15 |
| = | 17 | × | 4 15 |
| x | = | 68 15 |
| x | = | 4.533333 |