| ( | 1 | ÷ | ( | 9 | + | x | ) | + | 1 | ÷ | ( | 16 | + | x | ) | ) | x | = | 1 |
| 1 | ÷ | ( | 9 | + | x | ) | × | x | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | = | 1 |
| 方程两边同时乘以: | ( | 9 | + | x | ) |
| 1 | x | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | ( | 9 | + | x | ) | = | 1 | ( | 9 | + | x | ) |
| 1 | x | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | × | 9 | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | x | = | 1 | ( | 9 | + | x | ) |
| 1 | x | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | × | 9 | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | x | = | 1 | × | 9 | + | 1 | x |
| 1 | x | + | 9 | ÷ | ( | 16 | + | x | ) | × | x | + | 1 | ÷ | ( | 16 | + | x | ) | × | x | x | = | 9 | + | 1 | x |
| 方程两边同时乘以: | ( | 16 | + | x | ) |
| 1 | x | ( | 16 | + | x | ) | + | 9 | x | + | 1 | x | x | = | 9 | ( | 16 | + | x | ) | + | 1 | x | ( | 16 | + | x | ) |
| 1 | x | × | 16 | + | 1 | x | x | + | 9 | x | + | 1 | x | x | = | 9 | ( | 16 | + | x | ) | + | 1 | x | ( | 16 | + | x | ) |
| 1 | x | × | 16 | + | 1 | x | x | + | 9 | x | + | 1 | x | x | = | 9 | × | 16 | + | 9 | x | + | 1 | x | ( | 16 | + | x | ) |
| 16 | x | + | 1 | x | x | + | 9 | x | + | 1 | x | x | = | 144 | + | 9 | x | + | 1 | x | ( | 16 | + | x | ) |
| 25 | x | + | 1 | x | x | + | 1 | x | x | = | 144 | + | 9 | x | + | 1 | x | ( | 16 | + | x | ) |
| 25 | x | + | 1 | x | x | + | 1 | x | x | = | 144 | + | 9 | x | + | 1 | x | × | 16 | + | 1 | x | x |
| 25 | x | + | 1 | x | x | + | 1 | x | x | = | 144 | + | 9 | x | + | 16 | x | + | 1 | x | x |
| 25 | x | + | 1 | x | x | + | 1 | x | x | = | 144 | + | 25 | x | + | 1 | x | x |