| 6 | × | 3 2 | + | 14 | × | 2 | − | 14 | x | = | 7 | × | 3 2 | + | 13 | × | 2 | − | 13 | x |
| 方程左边 = | 9 | + | 28 | − | 14 | x |
| = | 37 | − | 14 | x |
| 37 | − | 14 | x | = | 7 | × | 3 2 | + | 13 | × | 2 | − | 13 | x |
| 方程右边 = | 21 2 | + | 26 | − | 13 | x |
| = | 73 2 | − | 13 | x |
| 37 | − | 14 | x | = | 73 2 | − | 13 | x |
| - | 14 | x | + | 13 | x | = | 73 2 | − | 37 |
| - | x | = | 73 2 | − | 37 |
| - | x | = | 73 2 | − | 37 |
| - | x | = | - | 1 2 |
1 2 | = | x |
| x | = | 1 2 |