| ( | 1 | ÷ | x | ) | × | 13 10 | = | ( | 1 | ÷ | x | − | 6 | ) |
| 1 | ÷ | x | × | 13 10 | = | ( | 1 | ÷ | x | − | 6 | ) |
| 1 | ÷ | x | × | 13 10 | = | 1 | ÷ | x | − | 6 |
13 10 | ÷ | x | = | 1 | ÷ | x | − | 6 |
| 方程两边同时乘以: | x |
13 10 | = | 1 | ÷ | 1 | × | 1 | − | 6 | x |
| 6 | x | = | 1 | ÷ | 1 | × | 1 | − | 13 10 |
| 6 | x | = | 1 | − | 13 10 |
| 6 | x | = | - | 3 10 |
| x | = | - | 3 10 | ÷ | 6 |
| = | - | 3 10 | × | 1 6 |
| = | - | 1 10 | × | 1 2 |
| x | = | - | 1 20 |
| x | = | - 0.05 |