| 12000 | = | 1 2 | × | 157 50 | × | 3 2 | ( | 50 | × | 5 | + | 70 | × | 6 | + | 160 | x | ) | + | 1 4 | × | 157 50 | × | 3 2 | × | 3 2 | × | 2000 |
| 方程右边 = | 471 200 | ( | 50 | × | 5 | + | 70 | × | 6 | + | 160 | x | ) | + | 7065 2 |
| 12000 | = | 471 200 | ( | 50 | × | 5 | + | 70 | × | 6 | + | 160 | x | ) | + | 7065 2 |
| 方程右边 = | 471 200 | × | 50 | × | 5 | + | 471 200 | × | 70 | × | 6 | + | 471 200 | × | 160 | x | + | 7065 2 |
| = | 2355 4 | + | 9891 10 | + | 1884 5 | x | + | 7065 2 |
| = | 102207 20 | + | 1884 5 | x |
| 12000 | = | 102207 20 | + | 1884 5 | x |
| - | 1884 5 | x | = | 102207 20 | − | 12000 |
| - | 1884 5 | x | = | - | 137793 20 |
137793 20 | = | 1884 5 | x |
1884 5 | x | = | 137793 20 |
| x | = | 137793 20 | ÷ | 1884 5 |
| = | 137793 20 | × | 5 1884 |
| = | 45931 4 | × | 1 628 |
| x | = | 45931 2512 |
| x | = | 18.284634 |