| z | = | 4 125 | + | z | ( | z | + | 4 125 | ) | ( | 129 125 | − | z | ) | ÷ | 319 50 | ÷ | 4 125 |
| 方程右边 = | 4 125 | + | z | ( | z | + | 4 125 | ) | ( | 129 125 | − | z | ) | × | 3125 638 |
| z | = | 4 125 | + | z | ( | z | + | 4 125 | ) | ( | 129 125 | − | z | ) | × | 3125 638 |
| 方程右边 = | 4 125 | + | z | z | ( | 129 125 | − | z | ) | × | 3125 638 | + | z | × | 4 125 | ( | 129 125 | − | z | ) | × | 3125 638 |
| = | 4 125 | + | z | z | ( | 129 125 | − | z | ) | × | 3125 638 | + | z | × | 50 319 | ( | 129 125 | − | z | ) |
| = | 4 125 | + | z | z | × | 129 125 | × | 3125 638 | − | z | z | z | × | 3125 638 | + | z | × | 50 319 | ( | 129 125 | − | z | ) |
| = | 4 125 | + | z | z | × | 3225 638 | − | z | z | z | × | 3125 638 | + | z | × | 50 319 | ( | 129 125 | − | z | ) |
| = | 4 125 | + | z | z | × | 3225 638 | − | z | z | z | × | 3125 638 | + | z | × | 50 319 | × | 129 125 | − | z |
| = | 4 125 | + | z | z | × | 3225 638 | − | z | z | z | × | 3125 638 | + | z | × | 258 1595 | − | z | × | 50 319 |
| z | = | 4 125 | + | z | z | × | 3225 638 | − | z | z | z | × | 3125 638 | + | 258 1595 | z | − | z | × | 50 319 |