( | X | − | 180 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1500 | = | ( | X | − | 180 | − | 4000 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1000 |
方程左边 = | X | ( | 1 | − | 25 100 | ) | × | 1 1500 | − | 180 | ( | 1 | − | 25 100 | ) | × | 1 1500 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 1500 | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 | × | 1 1500 | − | X | × | 25 100 | × | 1 1500 | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 1500 | − | X | × | 1 6000 | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | 1 2000 | X | − | 3 25 | ( | 1 | − | 25 100 | ) |
= | 1 2000 | X | − | 3 25 | × | 1 | + | 3 25 | × | 25 100 |
= | 1 2000 | X | − | 3 25 | + | 3 100 |
= | 1 2000 | X | − | 9 100 |
1 2000 | X | − | 9 100 | = | ( | X | − | 180 | − | 4000 | × | 8 100 | ) | ( | 1 | − | 25 100 | ) | ÷ | 1000 |
方程右边 = | X | ( | 1 | − | 25 100 | ) | × | 1 1000 | − | 180 | ( | 1 | − | 25 100 | ) | × | 1 1000 | − | 4000 | × | 8 100 | ( | 1 | − | 25 100 | ) | × | 1 1000 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 1000 | − | 9 50 | ( | 1 | − | 25 100 | ) | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 | × | 1 1000 | − | X | × | 25 100 | × | 1 1000 | − | 9 50 | ( | 1 | − | 25 100 | ) | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 1000 | − | X | × | 1 4000 | − | 9 50 | ( | 1 | − | 25 100 | ) | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | 3 4000 | X | − | 9 50 | ( | 1 | − | 25 100 | ) | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | 3 4000 | X | − | 9 50 | × | 1 | + | 9 50 | × | 25 100 | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | 3 4000 | X | − | 9 50 | + | 9 200 | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | 3 4000 | X | − | 27 200 | − | 8 25 | ( | 1 | − | 25 100 | ) |
= | 3 4000 | X | − | 27 200 | − | 8 25 | × | 1 | + | 8 25 | × | 25 100 |
= | 3 4000 | X | − | 27 200 | − | 8 25 | + | 2 25 |
= | 3 4000 | X | − | 3 8 |
1 2000 | X | − | 9 100 | = | 3 4000 | X | − | 3 8 |
1 2000 | X | − | 3 4000 | X | = | - | 3 8 | + | 9 100 |
- | 1 4000 | X | = | - | 3 8 | + | 9 100 |
- | 1 4000 | X | = | - | 57 200 |
57 200 | = | 1 4000 | X |
1 4000 | X | = | 57 200 |
X | = | 57 200 | ÷ | 1 4000 |
= | 57 200 | × | 4000 |
= | 57 | × | 20 |
X | = | 1140 |