| 1960 | x | ÷ | ( | 1 5 | − | x | ) | + | 784 | = | 784 | x | ÷ | ( | 4 5 | − | 2 | x | ) | + | 980 |
| 方程两边同时乘以: | ( | 1 5 | − | x | ) | , | ( | 4 5 | − | 2 | x | ) |
| 1960 | x | ( | 4 5 | − | 2 | x | ) | + | 784 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) | = | 784 | x | ( | 1 5 | − | x | ) | + | 980 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) |
| 1960 | x | × | 4 5 | − | 1960 | x | × | 2 | x | + | 784 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) | = | 784 | x | ( | 1 5 | − | x | ) | + | 980 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) |
| 1960 | x | × | 4 5 | − | 1960 | x | × | 2 | x | + | 784 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) | = | 784 | x | × | 1 5 | − | 784 | x | x | + | 980 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) |
| 1568 | x | − | 3920 | x | x | + | 784 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) | = | 784 5 | x | − | 784 | x | x | + | 980 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) |
| 1568 | x | − | 3920 | x | x | + | 784 | × | 1 5 | ( | 4 5 | − | 2 | x | ) | − | 784 | x | ( | 4 5 | − | 2 | x | ) | = | 784 5 | x | − | 784 | x | x | + | 980 | ( | 1 5 | − | x | ) | ( | 4 5 | − | 2 | x | ) |
| 1568 | x | − | 3920 | x | x | + | 784 | × | 1 5 | ( | 4 5 | − | 2 | x | ) | − | 784 | x | ( | 4 5 | − | 2 | x | ) | = | 784 5 | x | − | 784 | x | x | + | 980 | × | 1 5 | ( | 4 5 | − | 2 | x | ) | − | 980 | x | ( | 4 5 | − | 2 | x | ) |
| 1568 | x | − | 3920 | x | x | + | 784 5 | ( | 4 5 | − | 2 | x | ) | − | 784 | x | ( | 4 5 | − | 2 | x | ) | = | 784 5 | x | − | 784 | x | x | + | 196 | ( | 4 5 | − | 2 | x | ) | − | 980 | x | ( | 4 5 | − | 2 | x | ) |
| 1568 | x | − | 3920 | x | x | + | 784 5 | × | 4 5 | − | 784 5 | × | 2 | x | − | 784 | x | = | 784 5 | x | − | 784 | x | x | + | 196 | ( | 4 5 | − | 2 | x | ) | − | 980 | x | ( | 4 5 | − | 2 | x | ) |
| 1568 | x | − | 3920 | x | x | + | 784 5 | × | 4 5 | − | 784 5 | × | 2 | x | − | 784 | x | = | 784 5 | x | − | 784 | x | x | + | 196 | × | 4 5 | − | 196 | × | 2 | x | − | 980 | x |
| 1568 | x | − | 3920 | x | x | + | 3136 25 | − | 1568 5 | x | − | 784 | x | ( | 4 5 | − | 2 | x | ) | = | 784 5 | x | − | 784 | x | x | + | 784 5 | − | 392 | x | − | 980 | x | ( | 4 5 | − | 2 | x | ) |
6272 5 | x | − | 3920 | x | x | + | 3136 25 | − | 784 | x | ( | 4 5 | − | 2 | x | ) | = | - | 1176 5 | x | − | 784 | x | x | + | 784 5 | − | 980 | x | ( | 4 5 | − | 2 | x | ) |
6272 5 | x | − | 3920 | x | x | + | 3136 25 | − | 784 | x | × | 4 5 | + | 784 | x | × | 2 | = | - | 1176 5 | x | − | 784 | x | x | + | 784 5 | − | 980 | x | ( | 4 5 | − | 2 | x | ) |
6272 5 | x | − | 3920 | x | x | + | 3136 25 | − | 784 | x | × | 4 5 | + | 784 | x | × | 2 | = | - | 1176 5 | x | − | 784 | x | x | + | 784 5 | − | 980 | x | × | 4 5 | + | 980 | x | × | 2 |
6272 5 | x | − | 3920 | x | x | + | 3136 25 | − | 3136 5 | x | + | 1568 | x | x | = | - | 1176 5 | x | − | 784 | x | x | + | 784 5 | − | 784 | x | + | 1960 | x | x |
3136 5 | x | − | 3920 | x | x | + | 3136 25 | + | 1568 | x | x | = | - | 5096 5 | x | − | 784 | x | x | + | 784 5 | + | 1960 | x | x |