| 1 | ÷ | 19 | × | x | + | 1 | ÷ | 10 | × | ( | 250 | − | x | ) | = | 16 |
| 方程左边 = | 1 19 | x | + | 1 10 | ( | 250 | − | x | ) |
1 19 | x | + | 1 10 | ( | 250 | − | x | ) | = | 16 |
| 方程左边 = | 1 19 | x | + | 1 10 | × | 250 | − | 1 10 | x |
| = | 1 19 | x | + | 25 | − | 1 10 | x |
| = | - | 9 190 | x | + | 25 |
| - | 9 190 | x | + | 25 | = | 16 |
| - | 9 190 | x | = | 16 | − | 25 |
| - | 9 190 | x | = | - | 9 |
| 9 | = | 9 190 | x |
9 190 | x | = | 9 |
| x | = | 9 | ÷ | 9 190 |
| = | 9 | × | 190 9 |
| = | 1 | × | 190 |
| x | = | 190 |