| 174 | x | − | 1539 10 | = | 5 4 | ( | 200 | x | − | 190 | ) |
| 方程右边 = | 5 4 | × | 200 | x | − | 5 4 | × | 190 |
| = | 250 | x | − | 475 2 |
| 174 | x | − | 1539 10 | = | 250 | x | − | 475 2 |
| 174 | x | − | 250 | x | = | - | 475 2 | + | 1539 10 |
| - | 76 | x | = | - | 475 2 | + | 1539 10 |
| - | 76 | x | = | - | 418 5 |
418 5 | = | 76 | x |
| 76 | x | = | 418 5 |
| x | = | 418 5 | ÷ | 76 |
| = | 418 5 | × | 1 76 |
| = | 11 5 | × | 1 2 |
| x | = | 11 10 |
| x | = | 1.1 |