9 2 | x | − | 9 2 | − | 3 2 | x | − | 3 4 | ( | x | − | 2 | ) | = | 4 |
方程左边 = | 3 | x | − | 9 2 | − | 3 4 | ( | x | − | 2 | ) |
3 | x | − | 9 2 | − | 3 4 | ( | x | − | 2 | ) | = | 4 |
方程左边 = | 3 | x | − | 9 2 | − | 3 4 | x | + | 3 4 | × | 2 |
= | 3 | x | − | 9 2 | − | 3 4 | x | + | 3 2 |
= | 9 4 | x | − | 3 |
9 4 | x | − | 3 | = | 4 |
9 4 | x | = | 4 | + | 3 |
9 4 | x | = | 7 |
x | = | 7 | ÷ | 9 4 |
= | 7 | × | 4 9 |
x | = | 28 9 |
x | = | 3.111111 |