| ( | x | + | 1 | ) | ÷ | 5 | + | ( | x | − | 2 | ) | ÷ | 3 | = | 3 |
| 方程左边 = | x | × | 1 5 | + | 1 | × | 1 5 | + | ( | x | − | 2 | ) | × | 1 3 |
| = | x | × | 1 5 | + | 1 5 | + | ( | x | − | 2 | ) | × | 1 3 |
| = | 1 5 | x | + | 1 5 | + | x | × | 1 3 | − | 2 | × | 1 3 |
| = | 1 5 | x | + | 1 5 | + | x | × | 1 3 | − | 2 3 |
| = | 8 15 | x | − | 7 15 |
8 15 | x | − | 7 15 | = | 3 |
8 15 | x | = | 3 | + | 7 15 |
8 15 | x | = | 52 15 |
| x | = | 52 15 | ÷ | 8 15 |
| = | 52 15 | × | 15 8 |
| = | 13 | × | 1 2 |
| x | = | 13 2 |
| x | = | 6.5 |