1 100 | × | 10 | x | × | 3 | ÷ | 5 | − | 1 2 | × | 1 100 | × | 10 | × | 4 | ÷ | 5 | × | x | − | 3 500 | = | 1 2 | × | 1 100 | × | 2 |
| 方程左边 = | 3 50 | x | − | 1 25 | x | − | 3 500 | − | 11 250 |
| = | 1 50 | x | − | 1 20 |
1 50 | x | − | 1 20 | = | 1 2 | × | 1 100 | × | 2 |
| 方程右边 = | 1 100 |
1 50 | x | − | 1 20 | = | 1 100 |
1 50 | x | = | 1 100 | + | 1 20 |
1 50 | x | = | 3 50 |
| x | = | 3 50 | ÷ | 1 50 |
| = | 3 50 | × | 50 |
| = | 3 | × | 1 |
| x | = | 3 |