( | X | − | 6160 | ) | ( | 1 | − | 25 100 | ) | ÷ | 7000 | = | ( | ( | X | − | 5440 | ) | ( | 1 | − | 25 100 | ) | − | 3000 | ) | ÷ | 5000 |
方程左边 = | X | ( | 1 | − | 25 100 | ) | × | 1 7000 | − | 6160 | ( | 1 | − | 25 100 | ) | × | 1 7000 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 7000 | − | 22 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 | × | 1 7000 | − | X | × | 25 100 | × | 1 7000 | − | 22 25 | ( | 1 | − | 25 100 | ) |
= | X | × | 1 7000 | − | X | × | 1 28000 | − | 22 25 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | X | − | 22 25 | ( | 1 | − | 25 100 | ) |
= | 3 28000 | X | − | 22 25 | × | 1 | + | 22 25 | × | 25 100 |
= | 3 28000 | X | − | 22 25 | + | 11 50 |
= | 3 28000 | X | − | 33 50 |
3 28000 | X | − | 33 50 | = | ( | ( | X | − | 5440 | ) | ( | 1 | − | 25 100 | ) | − | 3000 | ) | ÷ | 5000 |
方程右边 = | ( | X | − | 5440 | ) | ( | 1 | − | 25 100 | ) | × | 1 5000 | − | 3000 | × | 1 5000 |
= | ( | X | − | 5440 | ) | ( | 1 | − | 25 100 | ) | × | 1 5000 | − | 3 5 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 5000 | − | 5440 | ( | 1 | − | 25 100 | ) | × | 1 5000 | − | 3 5 |
= | X | ( | 1 | − | 25 100 | ) | × | 1 5000 | − | 136 125 | ( | 1 | − | 25 100 | ) | − | 3 5 |
= | X | × | 1 | × | 1 5000 | − | X | × | 25 100 | × | 1 5000 | − | 136 125 | ( | 1 | − | 25 100 | ) | − | 3 5 |
= | X | × | 1 5000 | − | X | × | 1 20000 | − | 136 125 | ( | 1 | − | 25 100 | ) | − | 3 5 |
= | 3 20000 | X | − | 136 125 | ( | 1 | − | 25 100 | ) | − | 3 5 |
= | 3 20000 | X | − | 136 125 | × | 1 | + | 136 125 | × | 25 100 | − | 3 5 |
= | 3 20000 | X | − | 136 125 | + | 34 125 | − | 3 5 |
= | 3 20000 | X | − | 177 125 |
3 28000 | X | − | 33 50 | = | 3 20000 | X | − | 177 125 |
3 28000 | X | − | 3 20000 | X | = | - | 177 125 | + | 33 50 |
- | 3 70000 | X | = | - | 177 125 | + | 33 50 |
- | 3 70000 | X | = | - | 189 250 |
189 250 | = | 3 70000 | X |
3 70000 | X | = | 189 250 |
X | = | 189 250 | ÷ | 3 70000 |
= | 189 250 | × | 70000 3 |
= | 63 | × | 280 |
X | = | 17640 |