157 100 | × | 9 | ( | X | + | 300 | ) | + | 31 20 | × | 30 | ( | X | + | 200 | ) | + | 31 20 | × | 90 | ( | X | + | 100 | ) | + | 156 | × | 157 100 | × | 1300 | = | 600000 |
方程左边 = | 1413 100 | ( | X | + | 300 | ) | + | 93 2 | ( | X | + | 200 | ) | + | 279 2 | ( | X | + | 100 | ) | + | 318396 |
1413 100 | ( | X | + | 300 | ) | + | 93 2 | ( | X | + | 200 | ) | + | 279 2 | ( | X | + | 100 | ) | + | 318396 | = | 600000 |
方程左边 = | 1413 100 | X | + | 1413 100 | × | 300 | + | 93 2 | ( | X | + | 200 | ) | + | 279 2 | ( | X | + | 100 | ) | + | 318396 |
= | 1413 100 | X | + | 4239 | + | 93 2 | ( | X | + | 200 | ) | + | 279 2 | ( | X | + | 100 | ) | + | 318396 |
= | 1413 100 | X | + | 322635 | + | 93 2 | ( | X | + | 200 | ) | + | 279 2 | ( | X | + | 100 | ) |
= | 1413 100 | X | + | 322635 | + | 93 2 | X | + | 93 2 | × | 200 | + | 279 2 | ( | X | + | 100 | ) |
= | 1413 100 | X | + | 322635 | + | 93 2 | X | + | 9300 | + | 279 2 | ( | X | + | 100 | ) |
= | 6063 100 | X | + | 331935 | + | 279 2 | ( | X | + | 100 | ) |
= | 6063 100 | X | + | 331935 | + | 279 2 | X | + | 279 2 | × | 100 |
= | 6063 100 | X | + | 331935 | + | 279 2 | X | + | 13950 |
= | 20013 100 | X | + | 345885 |
20013 100 | X | + | 345885 | = | 600000 |
20013 100 | X | = | 600000 | − | 345885 |
20013 100 | X | = | 254115 |
X | = | 254115 | ÷ | 20013 100 |
= | 254115 | × | 100 20013 |
= | 84705 | × | 100 6671 |
X | = | 8470500 6671 |
X | = | 1269.749663 |