( | 11600 | + | 600 | + | 80 | + | x | + | 3600 | + | 216 | ) | × | 13 100 | + | 11600 | + | 60 | + | 80 | + | x | + | 3600 | + | 216 | = | 18740 |
方程左边 = | ( | 11600 | + | 600 | + | 80 | + | x | + | 3600 | + | 216 | ) | × | 13 100 | + | 15556 | + | x |
( | 11600 | + | 600 | + | 80 | + | x | + | 3600 | + | 216 | ) | × | 13 100 | + | 15556 | + | x | = | 18740 |
方程左边 = | 11600 | × | 13 100 | + | 600 | × | 13 100 | + | 80 | × | 13 100 | + | x | × | 13 100 | + | 3600 | × | 13 100 | + | 216 | × | 13 100 |
= | 1508 | + | 78 | + | 52 5 | + | x | × | 13 100 | + | 468 | + | 702 25 | + | 15556 | + | x |
= | 441212 25 | + | 113 100 | x |
441212 25 | + | 113 100 | x | = | 18740 |
113 100 | x | = | 18740 | − | 441212 25 |
113 100 | x | = | 27288 25 |
x | = | 27288 25 | ÷ | 113 100 |
= | 27288 25 | × | 100 113 |
= | 27288 | × | 4 113 |
x | = | 109152 113 |
x | = | 965.946903 |