4 25 | ( | 18 | + | x | ) | ( | 18 | + | x | ) | ÷ | ( | ( | 13 | + | x | ) | ( | 13 | + | x | ) | ) | = | 5 4 |
| 方程两边同时乘以: | ( | ( | 13 | + | x | ) | ( | 13 | + | x | ) | ) |
4 25 | ( | 18 | + | x | ) | ( | 18 | + | x | ) | = | 5 4 | ( | ( | 13 | + | x | ) | ( | 13 | + | x | ) | ) |
4 25 | × | 18 | ( | 18 | + | x | ) | + | 4 25 | x | ( | 18 | + | x | ) | = | 5 4 | ( | ( | 13 | + | x | ) | ( | 13 | + | x | ) | ) |
4 25 | × | 18 | ( | 18 | + | x | ) | + | 4 25 | x | ( | 18 | + | x | ) | = | 5 4 | ( | 13 | + | x | ) | ( | 13 | + | x | ) |
72 25 | ( | 18 | + | x | ) | + | 4 25 | x | ( | 18 | + | x | ) | = | 5 4 | ( | 13 | + | x | ) | ( | 13 | + | x | ) |
72 25 | × | 18 | + | 72 25 | x | + | 4 25 | x | ( | 18 | + | x | ) | = | 5 4 | ( | 13 | + | x | ) | ( | 13 | + | x | ) |
72 25 | × | 18 | + | 72 25 | x | + | 4 25 | x | ( | 18 | + | x | ) | = | 5 4 | × | 13 | ( | 13 | + | x | ) | + | 5 4 | x | ( | 13 | + | x | ) |
1296 25 | + | 72 25 | x | + | 4 25 | x | ( | 18 | + | x | ) | = | 65 4 | ( | 13 | + | x | ) | + | 5 4 | x | ( | 13 | + | x | ) |
1296 25 | + | 72 25 | x | + | 4 25 | x | × | 18 | + | 4 25 | x | x | = | 65 4 | ( | 13 | + | x | ) | + | 5 4 | x | ( | 13 | + | x | ) |
1296 25 | + | 72 25 | x | + | 4 25 | x | × | 18 | + | 4 25 | x | x | = | 65 4 | × | 13 | + | 65 4 | x | + | 5 4 | x | ( | 13 | + | x | ) |
1296 25 | + | 72 25 | x | + | 72 25 | x | + | 4 25 | x | x | = | 845 4 | + | 65 4 | x | + | 5 4 | x | ( | 13 | + | x | ) |
1296 25 | + | 144 25 | x | + | 4 25 | x | x | = | 845 4 | + | 65 4 | x | + | 5 4 | x | ( | 13 | + | x | ) |
1296 25 | + | 144 25 | x | + | 4 25 | x | x | = | 845 4 | + | 65 4 | x | + | 5 4 | x | × | 13 | + | 5 4 | x | x |
1296 25 | + | 144 25 | x | + | 4 25 | x | x | = | 845 4 | + | 65 4 | x | + | 65 4 | x | + | 5 4 | x | x |
1296 25 | + | 144 25 | x | + | 4 25 | x | x | = | 845 4 | + | 65 2 | x | + | 5 4 | x | x |