| ( | 62 | + | x | ) | ÷ | ( | 62 | + | 8 | + | 1 | + | 3 | + | x | ) | = | 1 |
| 方程两边同时乘以: | ( | 62 | + | 8 | + | 1 | + | 3 | + | x | ) |
| ( | 62 | + | x | ) | = | 1 | ( | 62 | + | 8 | + | 1 | + | 3 | + | x | ) |
| 62 | + | x | = | 1 | ( | 62 | + | 8 | + | 1 | + | 3 | + | x | ) |
| 62 | + | x | = | 1 | × | 62 | + | 1 | × | 8 | + | 1 | × | 1 | + | 1 | × | 3 | + | 1 | x |
| 62 | + | x | = | 62 | + | 8 | + | 1 | + | 3 | + | 1 | x |
| 62 | + | x | = | 74 | + | 1 | x |
| x | − | 1 | x | = | 74 | − | 62 |
| 0 | x | = | 74 | − | 62 |
| 0 | x | = | 12 |