( | 12400 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 12400 | + | x | + | 3 50 | x | = | 18740 |
方程左边 = | ( | 12400 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 12400 | + | 53 50 | x |
( | 12400 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 12400 | + | 53 50 | x | = | 18740 |
方程左边 = | 12400 | × | 13 100 | + | x | × | 13 100 | + | 3 50 | x | × | 13 100 | + | 12400 | + | 53 50 | x |
= | 1612 | + | x | × | 13 100 | + | 39 5000 | x | + | 12400 | + | 53 50 | x |
= | 14012 | + | 5989 5000 | x |
14012 | + | 5989 5000 | x | = | 18740 |
5989 5000 | x | = | 18740 | − | 14012 |
5989 5000 | x | = | 4728 |
x | = | 4728 | ÷ | 5989 5000 |
= | 4728 | × | 5000 5989 |
x | = | 23640000 5989 |
x | = | 3947.2366 |