| ( | 71 | + | 20 | + | 211 | ) | × | 5 4 | x | + | ( | 109 | + | 11 | ) | × | 6 5 | x | + | 228 | × | 21 20 | x | + | ( | 589 | + | 185 | ) | x | = | ( | 1028 | + | 396 | ) | × | 2607 |
| 方程左边 = | ( | 71 | + | 20 | + | 211 | ) | × | 5 4 | x | + | ( | 109 | + | 11 | ) | × | 6 5 | x | + | 1197 5 | x | + | ( | 589 | + | 185 | ) | x |
| ( | 71 | + | 20 | + | 211 | ) | × | 5 4 | x | + | ( | 109 | + | 11 | ) | × | 6 5 | x | + | 1197 5 | x | + | ( | 589 | + | 185 | ) | x | = | ( | 1028 | + | 396 | ) | × | 2607 |
| 方程左边 = | 71 | × | 5 4 | x | + | 20 | × | 5 4 | x | + | 211 | × | 5 4 | x | + | ( | 109 | + | 11 | ) | × | 6 5 | x |
| = | 355 4 | x | + | 25 | x | + | 1055 4 | x | + | ( | 109 | + | 11 | ) | × | 6 5 | x | + | 1197 5 | x | + | ( | 589 | + | 185 | ) |
| = | 6169 10 | x | + | ( | 109 | + | 11 | ) | × | 6 5 | x | + | ( | 589 | + | 185 | ) | x |
| = | 6169 10 | x | + | 109 | × | 6 5 | x | + | 11 | × | 6 5 | x | + | ( | 589 | + | 185 | ) | x |
| = | 6169 10 | x | + | 654 5 | x | + | 66 5 | x | + | ( | 589 | + | 185 | ) | x |
| = | 7609 10 | x | + | ( | 589 | + | 185 | ) | x |
| = | 7609 10 | x | + | 589 | x | + | 185 | x |
| = | 15349 10 | x |
15349 10 | x | = | ( | 1028 | + | 396 | ) | × | 2607 |
| 方程右边 = | 1028 | × | 2607 | + | 396 | × | 2607 |
| = | 2679996 | + | 1032372 |
| = | 3712368 |
15349 10 | x | = | 3712368 |
| x | = | 3712368 | ÷ | 15349 10 |
| = | 3712368 | × | 10 15349 |
| x | = | 37123680 15349 |
| x | = | 2418.638348 |