578 25 | = | P | ( | 1 | + | 5 | × | 10 100 | ) | ÷ | 5 | + | P | × | 4 100 |
方程右边 = | P | × | 1 | × | 1 5 | + | P | × | 5 | × | 10 100 | × | 1 5 | + | 4 100 | P |
= | P | × | 1 5 | + | P | × | 1 10 | + | 4 100 | P |
= | 17 50 | P |
578 25 | = | 17 50 | P |
- | 17 50 | P | = | - | 578 25 |
578 25 | = | 17 50 | P |
17 50 | P | = | 578 25 |
P | = | 578 25 | ÷ | 17 50 |
= | 578 25 | × | 50 17 |
= | 34 | × | 2 |
P | = | 68 |