| - | 4 | ÷ | 3 | × | x | + | 4 | = | 3 | ÷ | 4 | × | x | − | 3 |
| 方程左边 = | - | 4 3 | x | + | 4 |
| - | 4 3 | x | + | 4 | = | 3 | ÷ | 4 | × | x | − | 3 |
| 方程右边 = | 3 4 | x | − | 3 |
| - | 4 3 | x | + | 4 | = | 3 4 | x | − | 3 |
| - | 4 3 | x | − | 3 4 | x | = | - | 3 | − | 4 |
| - | 25 12 | x | = | - | 3 | − | 4 |
| - | 25 12 | x | = | - | 7 |
| 7 | = | 25 12 | x |
25 12 | x | = | 7 |
| x | = | 7 | ÷ | 25 12 |
| = | 7 | × | 12 25 |
| x | = | 84 25 |
| x | = | 3.36 |