| ( | 7 | x | − | 1 | ) | ÷ | 3 | − | ( | 5 | x | + | 1 | ) | = | 2 | − | ( | 3 | x | + | 2 | ) | ÷ | 4 |
| 方程左边 = | 7 | x | × | 1 3 | − | 1 | × | 1 3 | − | ( | 5 | x | + | 1 | ) |
| = | 7 3 | x | − | 1 3 | − | ( | 5 | x | + | 1 | ) |
| = | 7 3 | x | − | 1 3 | − | 5 | x | − | 1 |
| = | - | 8 3 | x | − | 4 3 |
| - | 8 3 | x | − | 4 3 | = | 2 | − | ( | 3 | x | + | 2 | ) | ÷ | 4 |
| 方程右边 = | 2 | − | 3 | x | × | 1 4 | − | 2 | × | 1 4 |
| = | 2 | − | 3 4 | x | − | 1 2 |
| = | 3 2 | − | 3 4 | x |
| - | 8 3 | x | − | 4 3 | = | 3 2 | − | 3 4 | x |
| - | 8 3 | x | + | 3 4 | x | = | 3 2 | + | 4 3 |
| - | 23 12 | x | = | 3 2 | + | 4 3 |
| - | 23 12 | x | = | 17 6 |
| - | 17 6 | = | 23 12 | x |
23 12 | x | = | - | 17 6 |
| x | = | - | 17 6 | ÷ | 23 12 |
| = | - | 17 6 | × | 12 23 |
| = | - | 17 | × | 2 23 |
| x | = | - | 34 23 |
| x | = | - 1.478261 |