11309 5 | × | 448 | + | 180 | x | × | 385 | = | 22 | × | 180 | × | 385 | + | 180 | ( | 12 | − | x | ) | × | 385 |
| 方程左边 = | 5066432 5 | + | 69300 | x |
5066432 5 | + | 69300 | x | = | 22 | × | 180 | × | 385 | + | 180 | ( | 12 | − | x | ) | × | 385 |
| 方程右边 = | 1524600 | + | 69300 | ( | 12 | − | x | ) |
5066432 5 | + | 69300 | x | = | 1524600 | + | 69300 | ( | 12 | − | x | ) |
| 方程右边 = | 1524600 | + | 69300 | × | 12 | − | 69300 | x |
| = | 1524600 | + | 831600 | − | 69300 | x |
| = | 2356200 | − | 69300 | x |
5066432 5 | + | 69300 | x | = | 2356200 | − | 69300 | x |
| 69300 | x | + | 69300 | x | = | 2356200 | − | 5066432 5 |
| 138600 | x | = | 2356200 | − | 5066432 5 |
| 138600 | x | = | 6714568 5 |
| x | = | 6714568 5 | ÷ | 138600 |
| = | 6714568 5 | × | 1 138600 |
| = | 119903 5 | × | 1 2475 |
| x | = | 119903 12375 |
| x | = | 9.689131 |