| 4 | X | = | 4 | X | × | 2 | ÷ | 3 | × | X | + | 4 | X | × | 3 | ÷ | 2 | × | X | ( | X | − | 2 | ÷ | 3 | × | X | − | 1 | ) |
| 方程右边 = | 8 3 | X | X | + | 6 | X | X | ( | X | − | 2 | ÷ | 3 | × | X | − | 1 | ) |
| 4 | X | = | 8 3 | X | X | + | 6 | X | X | ( | X | − | 2 | ÷ | 3 | × | X | − | 1 | ) |
| 方程右边 = | 8 3 | X | X | + | 6 | X | X | X | − | 6 | X | X | × | 2 | ÷ | 3 |
| = | 8 3 | X | X | + | 6 | X | X | X | − | 4 | X | X | X | − | 6 |
| 4 | X | = | 8 3 | X | X | + | 6 | X | X | X | − | 4 | X | X | X | − | 6 |
| X1=0 |