| 74 | × | 91 50 | − | 74 | − | x | = | 19 2 | x | − | 74 | − | x |
| 方程左边 = | 3367 25 | − | 74 | − | x |
| = | 1517 25 | − | x |
1517 25 | − | x | = | 19 2 | x | − | 74 | − | x |
| 方程右边 = | 17 2 | x | − | 74 |
1517 25 | − | x | = | 17 2 | x | − | 74 |
| - | x | − | 17 2 | x | = | - | 74 | − | 1517 25 |
| - | 19 2 | x | = | - | 74 | − | 1517 25 |
| - | 19 2 | x | = | - | 3367 25 |
3367 25 | = | 19 2 | x |
19 2 | x | = | 3367 25 |
| x | = | 3367 25 | ÷ | 19 2 |
| = | 3367 25 | × | 2 19 |
| x | = | 6734 475 |
| x | = | 14.176842 |