P | × | 25 100 | = | P | ( | 1 | − | 5 100 | ) | − | 50 | + | 25000 | ÷ | 1000 |
方程右边 = | P | ( | 1 | − | 5 100 | ) | − | 50 | + | 25 |
= | P | ( | 1 | − | 5 100 | ) | − | 25 |
25 100 | P | = | P | ( | 1 | − | 5 100 | ) | − | 25 |
方程右边 = | P | × | 1 | − | P | × | 5 100 | − | 25 |
= | 19 20 | P | − | 25 |
25 100 | P | = | 19 20 | P | − | 25 |
25 100 | P | − | 19 20 | P | = | - | 25 |
- | 7 10 | P | = | - | 25 |
25 | = | 7 10 | P |
7 10 | P | = | 25 |
P | = | 25 | ÷ | 7 10 |
= | 25 | × | 10 7 |
P | = | 250 7 |
P | = | 35.714286 |