| ( | 22 5 | − | ( | 5 2 | + | 19 10 | ) | × | 1 2 | ) | − | 1 2 | x | = | 6 5 |
| 方程左边 = | 22 5 | − | ( | 5 2 | + | 19 10 | ) | × | 1 2 | − | 1 2 | x |
| = | 22 5 | − | 5 2 | × | 1 2 | − | 19 10 | × | 1 2 | − | 1 2 | x |
| = | 22 5 | − | 5 4 | − | 19 20 | − | 1 2 | x |
| = | 11 5 | − | 1 2 | x |
11 5 | − | 1 2 | x | = | 6 5 |
| - | 1 2 | x | = | 6 5 | − | 11 5 |
| - | 1 2 | x | = | - | 1 |
| 1 | = | 1 2 | x |
1 2 | x | = | 1 |
| x | = | 1 | ÷ | 1 2 |
| = | 1 | × | 2 |
| x | = | 2 |