11 5 | x | − | 23 5 | ( | x | + | 12 5 | ) | = | 19 2 | x | − | 1942 25 |
| 方程左边 = | 11 5 | x | − | 23 5 | x | − | 23 5 | × | 12 5 |
| = | 11 5 | x | − | 23 5 | x | − | 276 25 |
| = | - | 12 5 | x | − | 276 25 |
| - | 12 5 | x | − | 276 25 | = | 19 2 | x | − | 1942 25 |
| - | 12 5 | x | − | 19 2 | x | = | - | 1942 25 | + | 276 25 |
| - | 119 10 | x | = | - | 1942 25 | + | 276 25 |
| - | 119 10 | x | = | - | 1666 25 |
1666 25 | = | 119 10 | x |
119 10 | x | = | 1666 25 |
| x | = | 1666 25 | ÷ | 119 10 |
| = | 1666 25 | × | 10 119 |
| = | 14 5 | × | 2 |
| x | = | 28 5 |
| x | = | 5.6 |