| ( | 6 5 | − | x | ) | ÷ | ( | 6 | + | 2 | x | ) | = | 1 | ÷ | 8 |
| 方程两边同时乘以: | ( | 6 | + | 2 | x | ) |
| ( | 6 5 | − | x | ) | = | 1 | ÷ | 8 | × | ( | 6 | + | 2 | x | ) |
6 5 | − | x | = | 1 | ÷ | 8 | × | ( | 6 | + | 2 | x | ) |
6 5 | − | x | = | 1 | ÷ | 8 | × | 6 | + | 1 | ÷ | 8 | × | 2 | x |
6 5 | − | x | = | 3 4 | + | 1 4 | x |
| - | x | − | 1 4 | x | = | 3 4 | − | 6 5 |
| - | 5 4 | x | = | 3 4 | − | 6 5 |
| - | 5 4 | x | = | - | 9 20 |
9 20 | = | 5 4 | x |
5 4 | x | = | 9 20 |
| x | = | 9 20 | ÷ | 5 4 |
| = | 9 20 | × | 4 5 |
| = | 9 5 | × | 1 5 |
| x | = | 9 25 |
| x | = | 0.36 |