( | x | + | 8 | ) | ÷ | 3 | = | ( | x | − | 9 | ) | ÷ | 4 |
方程左边 = | x | × | 1 3 | + | 8 | × | 1 3 |
= | x | × | 1 3 | + | 8 3 |
1 3 | x | + | 8 3 | = | ( | x | − | 9 | ) | ÷ | 4 |
方程右边 = | x | × | 1 4 | − | 9 | × | 1 4 |
= | x | × | 1 4 | − | 9 4 |
1 3 | x | + | 8 3 | = | 1 4 | x | − | 9 4 |
1 3 | x | − | 1 4 | x | = | - | 9 4 | − | 8 3 |
1 12 | x | = | - | 9 4 | − | 8 3 |
1 12 | x | = | - | 59 12 |
x | = | - | 59 12 | ÷ | 1 12 |
= | - | 59 12 | × | 12 |
= | - | 59 | × | 1 |
x | = | - | 59 |