( | x | + | 5 | ) | ÷ | 8 | = | ( | x | + | 6 | ) | ÷ | 7 |
方程左边 = | x | × | 1 8 | + | 5 | × | 1 8 |
= | x | × | 1 8 | + | 5 8 |
1 8 | x | + | 5 8 | = | ( | x | + | 6 | ) | ÷ | 7 |
方程右边 = | x | × | 1 7 | + | 6 | × | 1 7 |
= | x | × | 1 7 | + | 6 7 |
1 8 | x | + | 5 8 | = | 1 7 | x | + | 6 7 |
1 8 | x | − | 1 7 | x | = | 6 7 | − | 5 8 |
- | 1 56 | x | = | 6 7 | − | 5 8 |
- | 1 56 | x | = | 13 56 |
- | 13 56 | = | 1 56 | x |
1 56 | x | = | - | 13 56 |
x | = | - | 13 56 | ÷ | 1 56 |
= | - | 13 56 | × | 56 |
= | - | 13 | × | 1 |
x | = | - | 13 |