( | 85 | − | x | ) | ÷ | ( | x | − | 71 | ) | = | 1 2 |
方程两边同时乘以: | ( | x | − | 71 | ) |
( | 85 | − | x | ) | = | 1 2 | ( | x | − | 71 | ) |
85 | − | x | = | 1 2 | ( | x | − | 71 | ) |
85 | − | x | = | 1 2 | x | − | 1 2 | × | 71 |
85 | − | x | = | 1 2 | x | − | 71 2 |
- | x | − | 1 2 | x | = | - | 71 2 | − | 85 |
- | 3 2 | x | = | - | 71 2 | − | 85 |
- | 3 2 | x | = | - | 241 2 |
241 2 | = | 3 2 | x |
3 2 | x | = | 241 2 |
x | = | 241 2 | ÷ | 3 2 |
= | 241 2 | × | 2 3 |
= | 241 | × | 1 3 |
x | = | 241 3 |
x | = | 80.333333 |