| ( | x | − | 7 | ) | ÷ | 4 | − | ( | 5 | x | − | 6 | ) | ÷ | 3 | = | 1 |
| 方程左边 = | x | × | 1 4 | − | 7 | × | 1 4 | − | ( | 5 | x | − | 6 | ) | × | 1 3 |
| = | x | × | 1 4 | − | 7 4 | − | ( | 5 | x | − | 6 | ) | × | 1 3 |
| = | 1 4 | x | − | 7 4 | − | 5 | x | × | 1 3 | + | 6 | × | 1 3 |
| = | 1 4 | x | − | 7 4 | − | 5 3 | x | + | 2 |
| = | - | 17 12 | x | + | 1 4 |
| - | 17 12 | x | + | 1 4 | = | 1 |
| - | 17 12 | x | = | 1 | − | 1 4 |
| - | 17 12 | x | = | 3 4 |
| - | 3 4 | = | 17 12 | x |
17 12 | x | = | - | 3 4 |
| x | = | - | 3 4 | ÷ | 17 12 |
| = | - | 3 4 | × | 12 17 |
| = | - | 3 | × | 3 17 |
| x | = | - | 9 17 |
| x | = | - 0.529412 |