( | 12000 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 12000 | + | x | + | 3 50 | x | = | 18740 |
方程左边 = | ( | 12000 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 12000 | + | 53 50 | x |
( | 12000 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 12000 | + | 53 50 | x | = | 18740 |
方程左边 = | 12000 | × | 13 100 | + | x | × | 13 100 | + | 3 50 | x | × | 13 100 | + | 12000 | + | 53 50 | x |
= | 1560 | + | x | × | 13 100 | + | 39 5000 | x | + | 12000 | + | 53 50 | x |
= | 13560 | + | 5989 5000 | x |
13560 | + | 5989 5000 | x | = | 18740 |
5989 5000 | x | = | 18740 | − | 13560 |
5989 5000 | x | = | 5180 |
x | = | 5180 | ÷ | 5989 5000 |
= | 5180 | × | 5000 5989 |
x | = | 25900000 5989 |
x | = | 4324.595091 |