126 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | = | 238 5 |
| 方程两边同时乘以: | ( | 1 | + | x | ÷ | 12 | × | 2 | ) |
126 5 | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | = | 238 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) |
126 5 | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | × | 1 | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | × | x | ÷ | 12 | × | 2 | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | = | 238 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) |
126 5 | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | × | 1 | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | × | x | ÷ | 12 | × | 2 | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | = | 238 5 | × | 1 | + | 238 5 | x | ÷ | 12 | × | 2 |
126 5 | + | 84 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 14 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | × | x | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | = | 238 5 | + | 119 15 | x |
| 方程两边同时乘以: | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
126 5 | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 84 5 | + | 14 5 | x | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
126 5 | × | 1 | + | 126 5 | x | ÷ | 12 | × | 3 | + | 84 5 | + | 14 5 | x | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | = | 238 5 | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
126 5 | × | 1 | + | 126 5 | x | ÷ | 12 | × | 3 | + | 84 5 | + | 14 5 | x | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | = | 238 5 | × | 1 | + | 238 5 | x | ÷ | 12 | × | 3 | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
126 5 | + | 63 10 | x | + | 84 5 | + | 14 5 | x | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 119 10 | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
| 42 | + | 91 10 | x | + | 42 5 | ÷ | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | × | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 119 10 | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
| 方程两边同时乘以: | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 91 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | × | 1 | + | 42 | x | ÷ | 12 | × | 4 | + | 91 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | × | 1 | + | 42 | x | ÷ | 12 | × | 4 | + | 91 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | × | 1 | + | 238 5 | x | ÷ | 12 | × | 4 | + | 119 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) |
| 42 | + | 14 | x | + | 91 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 238 15 | x | + | 119 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | + | 14 | x | + | 91 10 | x | × | 1 | + | 91 10 | x | x | ÷ | 12 | × | 4 | + | 42 5 | = | 238 5 | + | 238 15 | x | + | 119 10 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | + | 14 | x | + | 91 10 | x | × | 1 | + | 91 10 | x | x | ÷ | 12 | × | 4 | + | 42 5 | = | 238 5 | + | 238 15 | x | + | 119 10 | x | × | 1 | + | 119 10 | x | x | ÷ | 12 | × | 4 | + | 119 15 |
| 42 | + | 14 | x | + | 91 10 | x | + | 91 30 | x | x | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 238 15 | x | + | 119 10 | x | + | 119 30 | x | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 2 | ) | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | × | 1 | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 42 5 | x | ÷ | 12 | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | ( | 1 | + | x | ÷ | 12 | × | 4 | ) |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | × | 1 | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 42 5 | x | ÷ | 12 | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | × | 1 | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 15 | x |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | + | 7 5 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 60 | x | x |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | × | 1 | + | 42 5 | x | ÷ | 12 | × | 3 | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | ( | 1 | + | x | ÷ | 12 | × | 4 | ) | + | 119 60 | x | x |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | × | 1 | + | 42 5 | x | ÷ | 12 | × | 3 | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | × | 1 | + | 119 15 | x | x |
| 42 | + | 231 10 | x | + | 91 30 | x | x | + | 42 5 | + | 21 10 | x | + | 7 5 | x | ( | 1 | + | x | ÷ | 12 | × | 3 | ) | = | 238 5 | + | 833 30 | x | + | 119 30 | x | x | + | 119 15 | x | + | 119 45 | x | x | + | 119 60 |