( | P | − | 10 | ) | × | 100000 | − | 960000 | × | 3 4 | = | 81 500 |
方程左边 = | ( | P | − | 10 | ) | × | 100000 | − | 720000 |
( | P | − | 10 | ) | × | 100000 | − | 720000 | = | 81 500 |
方程左边 = | P | × | 100000 | − | 10 | × | 100000 | − | 720000 |
= | P | × | 100000 | − | 1000000 | − | 720000 |
= | 100000 | P | − | 1720000 |
100000 | P | − | 1720000 | = | 81 500 |
100000 | P | = | 81 500 | + | 1720000 |
100000 | P | = | 860000081 500 |
P | = | 860000081 500 | ÷ | 100000 |
= | 860000081 500 | × | 1 100000 |
P | = | 860000081 50000000 |
P | = | 17.200002 |