( | x | − | 2 | ) | ÷ | 2 | − | ( | x | − | 1 | ) | ÷ | 5 | = | 3 |
方程左边 = | x | × | 1 2 | − | 2 | × | 1 2 | − | ( | x | − | 1 | ) | × | 1 5 |
= | x | × | 1 2 | − | 1 | − | ( | x | − | 1 | ) | × | 1 5 |
= | 1 2 | x | − | 1 | − | x | × | 1 5 | + | 1 | × | 1 5 |
= | 1 2 | x | − | 1 | − | x | × | 1 5 | + | 1 5 |
= | 3 10 | x | − | 4 5 |
3 10 | x | − | 4 5 | = | 3 |
3 10 | x | = | 3 | + | 4 5 |
3 10 | x | = | 19 5 |
x | = | 19 5 | ÷ | 3 10 |
= | 19 5 | × | 10 3 |
= | 19 | × | 2 3 |
x | = | 38 3 |
x | = | 12.666667 |