| ( | 1 | − | 2 | x | ) | ÷ | 3 | = | ( | 3 | x | + | 1 | ) | ÷ | 7 | − | 3 |
| 方程左边 = | 1 | × | 1 3 | − | 2 | x | × | 1 3 |
| = | 1 3 | − | 2 3 | x |
1 3 | − | 2 3 | x | = | ( | 3 | x | + | 1 | ) | ÷ | 7 | − | 3 |
| 方程右边 = | 3 | x | × | 1 7 | + | 1 | × | 1 7 | − | 3 |
| = | 3 7 | x | + | 1 7 | − | 3 |
| = | 3 7 | x | − | 20 7 |
1 3 | − | 2 3 | x | = | 3 7 | x | − | 20 7 |
| - | 2 3 | x | − | 3 7 | x | = | - | 20 7 | − | 1 3 |
| - | 23 21 | x | = | - | 20 7 | − | 1 3 |
| - | 23 21 | x | = | - | 67 21 |
67 21 | = | 23 21 | x |
23 21 | x | = | 67 21 |
| x | = | 67 21 | ÷ | 23 21 |
| = | 67 21 | × | 21 23 |
| = | 67 | × | 1 23 |
| x | = | 67 23 |
| x | = | 2.913043 |
| 4 | ÷ | 3 | − | 8 | x | = | 3 | − | x | ( | 11 | ÷ | 2 | ) |
| 方程左边 = | 4 3 | − | 8 | x |
4 3 | − | 8 | x | = | 3 | − | x | ( | 11 | ÷ | 2 | ) |
| 方程右边 = | 3 | − | x | × | 11 | ÷ | 2 |
| = | 3 | − | x | × | 11 2 |
4 3 | − | 8 | x | = | 3 | − | 11 2 | x |
| - | 8 | x | + | 11 2 | x | = | 3 | − | 4 3 |
| - | 5 2 | x | = | 3 | − | 4 3 |
| - | 5 2 | x | = | 5 3 |
| - | 5 3 | = | 5 2 | x |
5 2 | x | = | - | 5 3 |
| x | = | - | 5 3 | ÷ | 5 2 |
| = | - | 5 3 | × | 2 5 |
| = | - | 1 3 | × | 2 |
| x | = | - | 2 3 |
| x | = | - 0.666667 |