( | 3 2 | − | x | ) | × | 50 | = | ( | 2 | − | x | ) | × | 40 |
方程左边 = | 3 2 | × | 50 | − | x | × | 50 |
= | 75 | − | x | × | 50 |
75 | − | 50 | x | = | ( | 2 | − | x | ) | × | 40 |
方程右边 = | 2 | × | 40 | − | x | × | 40 |
= | 80 | − | x | × | 40 |
75 | − | 50 | x | = | 80 | − | 40 | x |
- | 50 | x | + | 40 | x | = | 80 | − | 75 |
- | 10 | x | = | 80 | − | 75 |
- | 10 | x | = | 5 |
- | 5 | = | 10 | x |
10 | x | = | - | 5 |
x | = | - | 5 | ÷ | 10 |
= | - | 5 | × | 1 10 |
= | - | 1 | × | 1 2 |
x | = | - | 1 2 |
x | = | - 0.5 |