| 12 | = | ( | x | + | 51 10 | ) | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | + | 51 10 | × | 12 | ÷ | ( | 51 5 | + | x | ) |
| 方程两边同时乘以: | ( | 51 5 | + | x | ) |
| 12 | ( | 51 5 | + | x | ) | = | ( | x | + | 51 10 | ) | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 51 10 | × | 12 |
| 12 | × | 51 5 | + | 12 | x | = | ( | x | + | 51 10 | ) | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 51 10 | × | 12 |
| 12 | × | 51 5 | + | 12 | x | = | x | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 51 10 | × | 12 |
612 5 | + | 12 | x | = | x | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 306 5 |
612 5 | + | 12 | x | = | x | × | 12 | ÷ | ( | x | + | 51 5 | ) | × | ( | 51 5 | + | x | ) | + | x | × | 291 25 | ( | 51 5 | + | x | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | + | 306 5 |
| 方程两边同时乘以: | ( | x | + | 51 5 | ) |
612 5 | ( | x | + | 51 5 | ) | + | 12 | x | ( | x | + | 51 5 | ) | = | x | × | 12 | ( | 51 5 | + | x | ) | + | x | × | 291 25 | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 306 5 |
612 5 | x | + | 612 5 | × | 51 5 | + | 12 | x | ( | x | + | 51 5 | ) | = | x | × | 12 | ( | 51 5 | + | x | ) | + | x | × | 291 25 | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 306 5 |
612 5 | x | + | 612 5 | × | 51 5 | + | 12 | x | ( | x | + | 51 5 | ) | = | x | × | 12 | × | 51 5 | + | x | × | 12 | x | + | x | × | 291 25 | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) |
612 5 | x | + | 31212 25 | + | 12 | x | ( | x | + | 51 5 | ) | = | x | × | 612 5 | + | x | × | 12 | x | + | x | × | 291 25 | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) |
612 5 | x | + | 31212 25 | + | 12 | x | x | + | 12 | x | × | 51 5 | = | 612 5 | x | + | x | × | 12 | x | + | x | × | 291 25 | ( | 51 5 | + | x | ) | ( | x | + | 51 5 | ) | + | 51 10 | ( | 12 | ÷ | ( | x | + | 51 5 | ) | + | 291 25 | ) | ( | 51 5 | + | x | ) |
612 5 | x | + | 31212 25 | + | 12 | x | x | + | 12 | x | × | 51 5 | = | 612 5 | x | + | x | × | 12 | x | + | x | × | 291 25 | × | 51 5 | ( | x | + | 51 5 | ) | + | x | × | 291 25 | x |
612 5 | x | + | 31212 25 | + | 12 | x | x | + | 612 5 | x | = | 612 5 | x | + | x | × | 12 | x | + | x | × | 14841 125 | ( | x | + | 51 5 | ) | + | x | × | 291 25 | x | ( | x | + | 51 5 | ) |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 612 5 | x | + | x | × | 12 | x | + | x | × | 14841 125 | ( | x | + | 51 5 | ) | + | x | × | 291 25 | x | ( | x | + | 51 5 | ) |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 612 5 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 14841 125 | × | 51 5 | + | x |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 612 5 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 756891 625 | + | x | × | 291 25 |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 833391 625 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 291 25 | x | ( | x | + | 51 5 | ) |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 833391 625 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 291 25 | x | x |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 833391 625 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 291 25 | x | x |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 833391 625 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 291 25 | x | x |
1224 5 | x | + | 31212 25 | + | 12 | x | x | = | 833391 625 | x | + | x | × | 12 | x | + | x | × | 14841 125 | x | + | x | × | 291 25 | x | x |
| 方程两边同时乘以: | ( | x | + | 51 5 | ) |
1224 5 | x | ( | x | + | 51 5 | ) | + | 31212 25 | ( | x | + | 51 5 | ) | + | 12 | x | x | ( | x | + | 51 5 | ) | = | 833391 625 | x | ( | x | + | 51 5 | ) | + | x | × | 12 | x | ( | x | + | 51 5 | ) | + | x | × | 14841 125 | x | ( | x | + | 51 5 | ) | + | x |
1224 5 | x | x | + | 1224 5 | x | × | 51 5 | + | 31212 25 | ( | x | + | 51 5 | ) | + | 12 | x | x | ( | x | + | 51 5 | ) | = | 833391 625 | x | ( | x | + | 51 5 | ) | + | x | × | 12 | x | ( | x | + | 51 5 | ) | + | x | × | 14841 125 | x | ( | x | + | 51 5 | ) | + | x |
1224 5 | x | x | + | 1224 5 | x | × | 51 5 | + | 31212 25 | ( | x | + | 51 5 | ) | + | 12 | x | x | ( | x | + | 51 5 | ) | = | 833391 625 | x | x | + | 833391 625 | x | × | 51 5 | + | x | × | 12 | x | ( | x | + | 51 5 | ) | + | x | × | 14841 125 |
| x= | - | 51 10 |