| ( | 6 | − | 2 | k | ) | ÷ | 3 | = | 2 | ( | - | 5 | ÷ | 9 | + | 3 | ) |
| 方程左边 = | 6 | × | 1 3 | − | 2 | k | × | 1 3 |
| = | 2 | − | 2 3 | k |
| 2 | − | 2 3 | k | = | 2 | ( | - | 5 | ÷ | 9 | + | 3 | ) |
| 方程右边 = | - | 2 | × | 5 | ÷ | 9 | + | 2 | × | 3 |
| = | - | 10 9 | + | 6 |
| = | 44 9 |
| 2 | − | 2 3 | k | = | 44 9 |
| - | 2 3 | k | = | 44 9 | − | 2 |
| - | 2 3 | k | = | 26 9 |
| - | 26 9 | = | 2 3 | k |
2 3 | k | = | - | 26 9 |
| k | = | - | 26 9 | ÷ | 2 3 |
| = | - | 26 9 | × | 3 2 |
| = | - | 13 3 | × | 1 |
| k | = | - | 13 3 |
| k | = | - 4.333333 |