| 1 | ÷ | 19 | + | ( | 500 | − | x | ) | × | 1 | ÷ | 10 | = | 41 |
| 方程左边 = | 1 19 | + | ( | 500 | − | x | ) | × | 1 10 |
1 19 | + | ( | 500 | − | x | ) | × | 1 10 | = | 41 |
| 方程左边 = | 1 19 | + | 500 | × | 1 10 | − | x | × | 1 10 |
| = | 1 19 | + | 50 | − | x | × | 1 10 |
| = | 951 19 | − | 1 10 | x |
951 19 | − | 1 10 | x | = | 41 |
| - | 1 10 | x | = | 41 | − | 951 19 |
| - | 1 10 | x | = | - | 172 19 |
172 19 | = | 1 10 | x |
1 10 | x | = | 172 19 |
| x | = | 172 19 | ÷ | 1 10 |
| = | 172 19 | × | 10 |
| x | = | 1720 19 |
| x | = | 90.526316 |