( | 100 | × | 10000 | + | 900000 | ) | × | 20 100 | = | 10000 | p | ( | 1 | − | 5 100 | ) | − | 1900000 |
方程左边 = | 100 | × | 10000 | × | 20 100 | + | 900000 | × | 20 100 |
= | 200000 | + | 180000 |
= | 380000 |
380000 | = | 10000 | p | ( | 1 | − | 5 100 | ) | − | 1900000 |
方程右边 = | 10000 | p | × | 1 | − | 10000 | p | × | 5 100 | − | 1900000 |
= | 10000 | p | − | 500 | p | − | 1900000 |
= | 9500 | p | − | 1900000 |
380000 | = | 9500 | p | − | 1900000 |
- | 9500 | p | = | - | 1900000 | − | 380000 |
- | 9500 | p | = | - | 2280000 |
2280000 | = | 9500 | p |
9500 | p | = | 2280000 |
p | = | 2280000 | ÷ | 9500 |
= | 2280000 | × | 1 9500 |
= | 240 | × | 1 |
p | = | 240 |