( | 3000000 | − | 200000 | − | 4000 | − | X | ) | × | 2 500 | = | X |
方程左边 = | 3000000 | × | 2 500 | − | 200000 | × | 2 500 | − | 4000 | × | 2 500 | − | X | × | 2 500 |
= | 12000 | − | 800 | − | 16 | − | X | × | 2 500 |
= | 11184 | − | 2 500 | X |
11184 | − | 2 500 | X | = | X |
- | 2 500 | X | − | X | = | - | 11184 |
- | 251 250 | X | = | - | 11184 |
11184 | = | 251 250 | X |
251 250 | X | = | 11184 |
X | = | 11184 | ÷ | 251 250 |
= | 11184 | × | 250 251 |
X | = | 2796000 251 |
X | = | 11139.442231 |