| ( | ( | 2 | x | − | 50 | ) | ÷ | 600 | ) | − | x | ÷ | 600 | = | 5 |
| 方程左边 = | ( | 2 | x | − | 50 | ) | ÷ | 600 | − | 1 600 | x |
| = | 2 | x | × | 1 600 | − | 50 | × | 1 600 | − | 1 600 | x |
| = | 1 300 | x | − | 1 12 | − | 1 600 | x |
| = | 1 600 | x | − | 1 12 |
1 600 | x | − | 1 12 | = | 5 |
1 600 | x | = | 5 | + | 1 12 |
1 600 | x | = | 61 12 |
| x | = | 61 12 | ÷ | 1 600 |
| = | 61 12 | × | 600 |
| = | 61 | × | 50 |
| x | = | 3050 |