( | X | − | 10 100 | ) | ÷ | ( | 15 100 | − | X | ) | = | 200 | ÷ | 100 |
方程两边同时乘以: | ( | 15 100 | − | X | ) |
( | X | − | 10 100 | ) | = | 200 | ÷ | 100 | × | ( | 15 100 | − | X | ) |
X | − | 10 100 | = | 200 | ÷ | 100 | × | ( | 15 100 | − | X | ) |
X | − | 10 100 | = | 200 | ÷ | 100 | × | 15 100 | − | 200 | ÷ | 100 | × | X |
X | − | 10 100 | = | 3 10 | − | 2 | X |
X | + | 2 | X | = | 3 10 | + | 10 100 |
3 | X | = | 3 10 | + | 10 100 |
3 | X | = | 2 5 |
X | = | 2 5 | ÷ | 3 |
= | 2 5 | × | 1 3 |
X | = | 2 15 |
X | = | 0.133333 |