| ( | x | + | 4 | ) | ÷ | 5 | − | ( | x | − | 5 | ) | = | ( | x | + | 3 | ) | ÷ | 3 | − | ( | x | − | 2 | ) | ÷ | 2 |
| 方程左边 = | x | × | 1 5 | + | 4 | × | 1 5 | − | ( | x | − | 5 | ) |
| = | x | × | 1 5 | + | 4 5 | − | ( | x | − | 5 | ) |
| = | 1 5 | x | + | 4 5 | − | x | + | 5 |
| = | - | 4 5 | x | + | 29 5 |
| - | 4 5 | x | + | 29 5 | = | ( | x | + | 3 | ) | ÷ | 3 | − | ( | x | − | 2 | ) | ÷ | 2 |
| 方程右边 = | x | × | 1 3 | + | 3 | × | 1 3 | − | ( | x | − | 2 | ) | × | 1 2 |
| = | x | × | 1 3 | + | 1 | − | ( | x | − | 2 | ) | × | 1 2 |
| = | 1 3 | x | + | 1 | − | x | × | 1 2 | + | 2 | × | 1 2 |
| = | 1 3 | x | + | 1 | − | x | × | 1 2 | + | 1 |
| = | - | 1 6 | x | + | 2 |
| - | 4 5 | x | + | 29 5 | = | - | 1 6 | x | + | 2 |
| - | 4 5 | x | + | 1 6 | x | = | 2 | − | 29 5 |
| - | 19 30 | x | = | 2 | − | 29 5 |
| - | 19 30 | x | = | - | 19 5 |
19 5 | = | 19 30 | x |
19 30 | x | = | 19 5 |
| x | = | 19 5 | ÷ | 19 30 |
| = | 19 5 | × | 30 19 |
| = | 1 | × | 6 |
| x | = | 6 |