1 | ÷ | 6 | × | x | + | 1 | ÷ | 7 | × | x | + | 1 | ÷ | 12 | × | x | + | 5 | + | 4 | = | 1 | ÷ | 2 | × | x |
方程左边 = | 1 6 | x | + | 1 7 | x | + | 1 12 | x | + | 5 | + | 4 |
= | 11 28 | x | + | 9 |
11 28 | x | + | 9 | = | 1 | ÷ | 2 | × | x |
方程右边 = | 1 2 | x |
11 28 | x | + | 9 | = | 1 2 | x |
11 28 | x | − | 1 2 | x | = | - | 9 |
- | 3 28 | x | = | - | 9 |
9 | = | 3 28 | x |
3 28 | x | = | 9 |
x | = | 9 | ÷ | 3 28 |
= | 9 | × | 28 3 |
= | 3 | × | 28 |
x | = | 84 |