| 20 | = | 108 25 | ÷ | ( | 1 | + | j | ) | + | 45159 10000 | ÷ | ( | 1 | + | j | ) | × | ( | 1 | + | j | ) | + | 126 25 | ÷ | ( | 1 | + | j | ) | × | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ÷ | ( | 1 | + | j | ) | × | ( | 1 | + | j | ) |
| 方程两边同时乘以: | ( | 1 | + | j | ) |
| 20 | ( | 1 | + | j | ) | = | 108 25 | + | 45159 10000 | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 792 125 | ( | 1 | + | j | ) |
| 20 | × | 1 | + | 20 | j | = | 108 25 | + | 45159 10000 | ( | 1 | + | j | ) | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 792 125 | ( | 1 | + | j | ) |
| 20 | × | 1 | + | 20 | j | = | 108 25 | + | 45159 10000 | × | 1 | + | 45159 10000 | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 108 25 | + | 45159 10000 | + | 45159 10000 | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 792 125 |
| 20 | + | 20 | j | = | 88359 10000 | + | 45159 10000 | j | + | 126 25 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 792 125 | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 88359 10000 | + | 45159 10000 | j | + | 126 25 | × | 1 | ( | 1 | + | j | ) | + | 126 25 | j | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 88359 10000 | + | 45159 10000 | j | + | 126 25 | ( | 1 | + | j | ) | + | 126 25 | j | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 88359 10000 | + | 45159 10000 | j | + | 126 25 | × | 1 | + | 126 25 | j | + | 126 25 | j | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 88359 10000 | + | 45159 10000 | j | + | 126 25 | + | 126 25 | j | + | 126 25 | j | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 95559 10000 | j | + | 126 25 | j | ( | 1 | + | j | ) | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 792 125 | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 95559 10000 | j | + | 126 25 | j | × | 1 | + | 126 25 | j | j | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 95559 10000 | j | + | 126 25 | j | + | 126 25 | j | j | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 792 125 | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | × | 1 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | j |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | ( | 1 | + | j | ) | ( | 1 | + | j | ) | + | 1413 250 | j | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | × | 1 | ( | 1 | + | j | ) | + | 1413 250 | j | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | ( | 1 | + | j | ) | + | 1413 250 | j | ( | 1 | + | j | ) | + | 1413 250 |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | × | 1 | + | 1413 250 | j | + | 1413 250 | j |
| 20 | + | 20 | j | = | 138759 10000 | + | 145959 10000 | j | + | 126 25 | j | j | + | 1413 250 | + | 1413 250 | j | + | 1413 250 | j | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 195279 10000 | + | 202479 10000 | j | + | 126 25 | j | j | + | 1413 250 | j | ( | 1 | + | j | ) | + | 1413 250 | j | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 195279 10000 | + | 202479 10000 | j | + | 126 25 | j | j | + | 1413 250 | j | × | 1 | + | 1413 250 | j | j |
| 20 | + | 20 | j | = | 195279 10000 | + | 202479 10000 | j | + | 126 25 | j | j | + | 1413 250 | j | + | 1413 250 | j | j | + | 1413 250 |
| 20 | + | 20 | j | = | 195279 10000 | + | 258999 10000 | j | + | 126 25 | j | j | + | 1413 250 | j | j | + | 1413 250 | j | ( | 1 | + | j | ) |
| 20 | + | 20 | j | = | 195279 10000 | + | 258999 10000 | j | + | 126 25 | j | j | + | 1413 250 | j | j | + | 1413 250 | j | × | 1 |
| 20 | + | 20 | j | = | 195279 10000 | + | 258999 10000 | j | + | 126 25 | j | j | + | 1413 250 | j | j | + | 1413 250 | j | ( | 1 | + | j | ) |