( | 5000 | + | x | ) | ( | 1 | − | 20 100 | ) | × | 20 100 | = | x |
方程左边 = | 5000 | ( | 1 | − | 20 100 | ) | × | 20 100 | + | x | ( | 1 | − | 20 100 | ) | × | 20 100 |
= | 1000 | ( | 1 | − | 20 100 | ) | + | x | ( | 1 | − | 20 100 | ) | × | 20 100 |
= | 1000 | × | 1 | − | 1000 | × | 20 100 | + | x | ( | 1 | − | 20 100 | ) | × | 20 100 |
= | 1000 | − | 200 | + | x | ( | 1 | − | 20 100 | ) | × | 20 100 |
= | 800 | + | x | ( | 1 | − | 20 100 | ) | × | 20 100 |
= | 800 | + | x | × | 1 | × | 20 100 | − | x | × | 20 100 | × | 20 100 |
= | 800 | + | x | × | 1 5 | − | x | × | 1 25 |
= | 800 | + | 4 25 | x |
800 | + | 4 25 | x | = | x |
4 25 | x | − | x | = | - | 800 |
- | 21 25 | x | = | - | 800 |
800 | = | 21 25 | x |
21 25 | x | = | 800 |
x | = | 800 | ÷ | 21 25 |
= | 800 | × | 25 21 |
x | = | 20000 21 |
x | = | 952.380952 |