( | X | − | 160000 | ) | ( | 1 | − | 25 100 | ) | ÷ | 250000 | = | ( | X | − | 360000 | ) | ( | 1 | − | 25 100 | ) | ÷ | 200000 |
方程左边 = | X | ( | 1 | − | 25 100 | ) | × | 1 250000 | − | 160000 | ( | 1 | − | 25 100 | ) | × | 1 250000 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 250000 | − | 16 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 | × | 1 250000 | − | X | × | 25 100 | × | 1 250000 | − | 16 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 250000 | − | X | × | 1 1000000 | − | 16 25 | ( | 1 | − | 25 100 | ) |