9 10 | × | 17 20 | X | = | 17 20 | ( | 17 20 | × | 47 1250 | X | + | 9 10 | × | 17 20 | × | 23 200 | X | + | 3 50 | X | + | 100 | ) |
| 方程左边 = | 153 200 | X |
153 200 | X | = | 17 20 | ( | 17 20 | × | 47 1250 | X | + | 9 10 | × | 17 20 | × | 23 200 | X | + | 3 50 | X | + | 100 | ) |
| 方程右边 = | 17 20 | × | 17 20 | × | 47 1250 | X | + | 17 20 | × | 9 10 | × | 17 20 | × | 23 200 | X | + | 17 20 | × | 3 50 | X |
| = | 13583 500000 | X | + | 59823 800000 | X | + | 51 1000 | X | + | 85 |