| ( | ( | X | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 4 | ) | + | 6 | ÷ | 8 | ) | ÷ | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) | = | ( | 2 | X | − | 1 | ) | ÷ | 2 |
| 方程两边同时乘以: | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| ( | ( | X | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 4 | ) | + | 6 | ÷ | 8 | ) | = | ( | 2 | X | − | 1 | ) | ÷ | 2 | × | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| ( | X | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 4 | ) | + | 6 | ÷ | 8 | = | ( | 2 | X | − | 1 | ) | ÷ | 2 | × | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| ( | X | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 4 | ) | + | 6 | ÷ | 8 | = | 2 | X | ÷ | 2 | × | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) | − | 1 | ÷ | 2 | × | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| ( | X | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 4 | ) | + | 3 4 | = | 1 | X | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| X | ÷ | 2 | × | ( | 1 | + | 1 | ÷ | 4 | ) | + | 3 4 | = | 1 | X | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| X | ÷ | 2 | × | ( | 1 | + | 1 | ÷ | 4 | ) | + | 3 4 | = | 1 | X | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| X | × | 1 2 | × | 1 | + | X | × | 1 2 | × | 1 | ÷ | 4 | + | 3 4 | = | 1 | X | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| X | × | 1 2 | × | 1 | + | X | × | 1 2 | × | 1 | ÷ | 4 | + | 3 4 | = | 1 | X | × | 2 | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 | X | × | 3 | ÷ | 2 | × | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
| X | × | 1 2 | + | X | × | 1 8 | + | 3 4 | = | 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 3 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 3 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 2 | X | × | 1 | + | 2 | X | × | 1 | ÷ | 2 | − | 3 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 2 | X | + | 1 | X | − | 3 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 3 | X | − | 3 2 | X | ( | 1 | + | 1 | ÷ | 2 | ) | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 3 | X | − | 3 2 | X | × | 1 | − | 3 2 | X | × | 1 | ÷ | 2 | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 3 | X | − | 3 2 | X | − | 3 4 | X | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 1 2 | ( | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 1 2 | ( | 2 | − | 3 | ÷ | 2 | ) | ( | 1 | + | 1 | ÷ | 2 | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 1 2 | × | 2 | ( | 1 | + | 1 | ÷ | 2 | ) | + | 1 2 | × | 3 | ÷ | 2 | × | ( | 1 | + | 1 | ÷ | 2 | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 1 | ( | 1 | + | 1 | ÷ | 2 | ) | + | 3 4 | ( | 1 | + | 1 | ÷ | 2 | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 1 | × | 1 | − | 1 | × | 1 | ÷ | 2 | + | 3 4 | ( | 1 | + | 1 | ÷ | 2 | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 1 | − | 1 2 | + | 3 4 | ( | 1 | + | 1 | ÷ | 2 | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 3 2 | + | 3 4 | ( | 1 | + | 1 | ÷ | 2 | ) |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 3 2 | + | 3 4 | × | 1 | + | 3 4 | × | 1 | ÷ | 2 |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 3 2 | + | 3 4 | + | 3 8 |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 3 8 |
5 8 | X | + | 3 4 | = | 3 4 | X | − | 3 8 |
5 8 | X | − | 3 4 | X | = | - | 3 8 | − | 3 4 |
| - | 1 8 | X | = | - | 3 8 | − | 3 4 |
| - | 1 8 | X | = | - | 9 8 |
9 8 | = | 1 8 | X |
1 8 | X | = | 9 8 |
| X | = | 9 8 | ÷ | 1 8 |
| = | 9 8 | × | 8 |
| = | 9 | × | 1 |
| X | = | 9 |