| 25 | = | 193 5 | + | 49 | x | ÷ | 89 50 | + | 2 | x |
| 方程右边 = | 193 5 | + | 2450 89 | x | + | 2 | x |
| = | 193 5 | + | 2628 89 | x |
| 25 | = | 193 5 | + | 2628 89 | x |
| - | 2628 89 | x | = | 193 5 | − | 25 |
| - | 2628 89 | x | = | 68 5 |
| - | 68 5 | = | 2628 89 | x |
2628 89 | x | = | - | 68 5 |
| x | = | - | 68 5 | ÷ | 2628 89 |
| = | - | 68 5 | × | 89 2628 |
| = | - | 17 5 | × | 89 657 |
| x | = | - | 1513 3285 |
| x | = | - 0.460578 |