| x | ÷ | 14 | × | 1 2 | × | 378 | + | ( | 450000 | − | x | ) | ÷ | 11 2 | × | 9 10 | × | 66 | = | 373800 |
| 方程左边 = | x | × | 27 2 | + | ( | 450000 | − | x | ) | × | 54 5 |
27 2 | x | + | ( | 450000 | − | x | ) | × | 54 5 | = | 373800 |
| 方程左边 = | 27 2 | x | + | 450000 | × | 54 5 | − | x | × | 54 5 |
| = | 27 2 | x | + | 4860000 | − | x | × | 54 5 |
| = | 27 10 | x | + | 4860000 |
27 10 | x | + | 4860000 | = | 373800 |
27 10 | x | = | 373800 | − | 4860000 |
27 10 | x | = | - | 4486200 |
| x | = | - | 4486200 | ÷ | 27 10 |
| = | - | 4486200 | × | 10 27 |
| = | - | 1495400 | × | 10 9 |
| x | = | - | 14954000 9 |
| x | = | - 1661555.555556 |