( | x | − | 3 10 | ) | ÷ | 2 5 | − | ( | x | + | 2 5 | ) | ÷ | 1 5 | = | 1 |
方程左边 = | x | × | 5 2 | − | 3 10 | × | 5 2 | − | ( | x | + | 2 5 | ) | × | 5 |
= | x | × | 5 2 | − | 3 4 | − | ( | x | + | 2 5 | ) | × | 5 |
= | 5 2 | x | − | 3 4 | − | x | × | 5 | − | 2 5 | × | 5 |
= | 5 2 | x | − | 3 4 | − | x | × | 5 | − | 2 |
= | - | 5 2 | x | − | 11 4 |
- | 5 2 | x | − | 11 4 | = | 1 |
- | 5 2 | x | = | 1 | + | 11 4 |
- | 5 2 | x | = | 15 4 |
- | 15 4 | = | 5 2 | x |
5 2 | x | = | - | 15 4 |
x | = | - | 15 4 | ÷ | 5 2 |
= | - | 15 4 | × | 2 5 |
= | - | 3 2 | × | 1 |
x | = | - | 3 2 |
x | = | - 1.5 |