100 | P | − | ( | 580 | + | 40 | × | 100 | ) | − | 100 | ( | P | × | 13 100 | − | 5 | ) | × | 12 100 | = | 60 |
方程左边 = | 100 | P | − | ( | 580 | + | 40 | × | 100 | ) | − | 12 | ( | P | × | 13 100 | − | 5 | ) |
100 | P | − | ( | 580 | + | 40 | × | 100 | ) | − | 12 | ( | P | × | 13 100 | − | 5 | ) | = | 60 |
方程左边 = | 100 | P | − | 580 | − | 40 | × | 100 | − | 12 | ( | P | × | 13 100 | − | 5 | ) |
= | 100 | P | − | 580 | − | 4000 | − | 12 | ( | P | × | 13 100 | − | 5 | ) |
= | 100 | P | − | 4580 | − | 12 | ( | P | × | 13 100 | − | 5 | ) |
= | 100 | P | − | 4580 | − | 12 | P | × | 13 100 | + | 12 | × | 5 |
= | 100 | P | − | 4580 | − | 39 25 | P | + | 60 |
= | 2461 25 | P | − | 4520 |
2461 25 | P | − | 4520 | = | 60 |
2461 25 | P | = | 60 | + | 4520 |
2461 25 | P | = | 4580 |
P | = | 4580 | ÷ | 2461 25 |
= | 4580 | × | 25 2461 |
P | = | 114500 2461 |
P | = | 46.525803 |