200 | ( | 15 100 | − | X | ) | = | 100 | ( | X | − | 10 100 | ) |
方程左边 = | 200 | × | 15 100 | − | 200 | X |
= | 30 | − | 200 | X |
30 | − | 200 | X | = | 100 | ( | X | − | 10 100 | ) |
方程右边 = | 100 | X | − | 100 | × | 10 100 |
= | 100 | X | − | 10 |
30 | − | 200 | X | = | 100 | X | − | 10 |
- | 200 | X | − | 100 | X | = | - | 10 | − | 30 |
- | 300 | X | = | - | 10 | − | 30 |
- | 300 | X | = | - | 40 |
40 | = | 300 | X |
300 | X | = | 40 |
X | = | 40 | ÷ | 300 |
= | 40 | × | 1 300 |
= | 2 | × | 1 15 |
X | = | 2 15 |
X | = | 0.133333 |