| 100000 | ÷ | 5 | + | 3 5 | x | = | 190000 | ÷ | 5 | + | 3 10 | x |
| 方程左边 = | 20000 | + | 3 5 | x |
| 20000 | + | 3 5 | x | = | 190000 | ÷ | 5 | + | 3 10 | x |
| 方程右边 = | 38000 | + | 3 10 | x |
| 20000 | + | 3 5 | x | = | 38000 | + | 3 10 | x |
3 5 | x | − | 3 10 | x | = | 38000 | − | 20000 |
3 10 | x | = | 38000 | − | 20000 |
3 10 | x | = | 18000 |
| x | = | 18000 | ÷ | 3 10 |
| = | 18000 | × | 10 3 |
| = | 6000 | × | 10 |
| x | = | 60000 |