( | 2 | − | x | ) | × | 40 | = | ( | 4 | − | x | ) | × | 16 |
方程左边 = | 2 | × | 40 | − | x | × | 40 |
= | 80 | − | x | × | 40 |
80 | − | 40 | x | = | ( | 4 | − | x | ) | × | 16 |
方程右边 = | 4 | × | 16 | − | x | × | 16 |
= | 64 | − | x | × | 16 |
80 | − | 40 | x | = | 64 | − | 16 | x |
- | 40 | x | + | 16 | x | = | 64 | − | 80 |
- | 24 | x | = | 64 | − | 80 |
- | 24 | x | = | - | 16 |
16 | = | 24 | x |
24 | x | = | 16 |
x | = | 16 | ÷ | 24 |
= | 16 | × | 1 24 |
= | 2 | × | 1 3 |
x | = | 2 3 |
x | = | 0.666667 |