1 | ÷ | 6 | × | x | + | 1 | ÷ | 7 | × | x | + | 1 | ÷ | 12 | × | x | + | 5 | + | 4 | = | 1 | ÷ | 12 | × | 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 | ÷ | 12 | × | x |
方程右边 = | 1 12 | x |
11 28 | x | + | 9 | = | 1 12 | x |
11 28 | x | − | 1 12 | x | = | - | 9 |
13 42 | x | = | - | 9 |
x | = | - | 9 | ÷ | 13 42 |
= | - | 9 | × | 42 13 |
x | = | - | 378 13 |
x | = | - 29.076923 |