( | 13000 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 13000 | + | x | + | 3 50 | x | = | 18740 |
方程左边 = | ( | 13000 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 13000 | + | 53 50 | x |
( | 13000 | + | x | + | 3 50 | x | ) | × | 13 100 | + | 13000 | + | 53 50 | x | = | 18740 |
方程左边 = | 13000 | × | 13 100 | + | x | × | 13 100 | + | 3 50 | x | × | 13 100 | + | 13000 | + | 53 50 | x |
= | 1690 | + | x | × | 13 100 | + | 39 5000 | x | + | 13000 | + | 53 50 | x |
= | 14690 | + | 5989 5000 | x |
14690 | + | 5989 5000 | x | = | 18740 |
5989 5000 | x | = | 18740 | − | 14690 |
5989 5000 | x | = | 4050 |
x | = | 4050 | ÷ | 5989 5000 |
= | 4050 | × | 5000 5989 |
x | = | 20250000 5989 |
x | = | 3381.198865 |