| x | ( | ( | 1 | ÷ | 25 | ) | x | + | 1 | ) | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) | = | 50 | ( | ( | 1 | ÷ | 441 250 | ) | x | + | 1 | ) |
| 方程左边 = | x | ( | 1 | ÷ | 25 | ) | x | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 | ÷ | 25 | × | x | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 25 | x | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 25 | x | ( | 1 | ÷ | 3 | ) | x | + | x | × | 1 25 | x | × | 1 | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 25 | x | ( | 1 | ÷ | 3 | ) | x | + | x | × | 1 25 | x | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 25 | x | × | 1 | ÷ | 3 | × | x | + | x | × | 1 25 | x | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 | ( | ( | 1 | ÷ | 3 | ) | x | + | 1 | ) |
| = | x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 | ( | 1 | ÷ | 3 | ) | x | + | x |
| = | x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 | ( | 1 | ÷ | 3 | ) | x | + | x |
| = | x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 | × | 1 | ÷ | 3 | × | x |
| = | x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 3 | x | + | 1 | x |
| x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 3 | x | + | 1 | x | = | 50 | ( | ( | 1 | ÷ | 441 250 | ) | x | + | 1 | ) |
| 方程右边 = | 50 | ( | 1 | ÷ | 441 250 | ) | x | + | 50 | × | 1 |
| = | 50 | ( | 1 | ÷ | 441 250 | ) | x | + | 50 |
| = | 50 | × | 1 | ÷ | 441 250 | × | x | + | 50 |
| = | 12500 441 | x | + | 50 |
| x | × | 1 75 | x | x | + | x | × | 1 25 | x | + | x | × | 1 3 | x | + | 1 | x | = | 12500 441 | x | + | 50 |