| 70 | × | 69 2000 | + | ( | 1720 | − | 70 | + | 69 | + | 2 100 | V | ) | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | = | 673 20 | + | 9 25000 | V |
| 方程左边 = | 483 200 | + | ( | 1720 | − | 70 | + | 69 | + | 2 100 | V | ) | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
483 200 | + | ( | 1720 | − | 70 | + | 69 | + | 2 100 | V | ) | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | = | 673 20 | + | 9 25000 | V |
| 方程左边 = | 483 200 | + | 1720 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | 483 200 | + | 1720 | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1720 | × | 1 | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V |
| = | 483 200 | + | 860 | ( | 1 | + | 69 2000 | ) | − | 1720 | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 343517 200 | + | 860 | ( | 1 | + | 69 2000 | ) | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 343517 200 | + | 860 | × | 1 | + | 860 | × | 69 2000 | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 343517 200 | + | 860 | + | 2967 100 | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 165583 200 | − | 70 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 165583 200 | − | 70 | ( | 1 | + | 69 2000 | ) | × | 1 2 | + | 70 | × | 1 | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 165583 200 | − | 35 | ( | 1 | + | 69 2000 | ) | + | 70 | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 151583 200 | − | 35 | ( | 1 | + | 69 2000 | ) | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 151583 200 | − | 35 | × | 1 | − | 35 | × | 69 2000 | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 151583 200 | − | 35 | − | 483 400 | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 317649 400 | + | 69 | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 317649 400 | + | 69 | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 69 | × | 1 | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 317649 400 | + | 69 2 | ( | 1 | + | 69 2000 | ) | − | 69 | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 345249 400 | + | 69 2 | ( | 1 | + | 69 2000 | ) | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 345249 400 | + | 69 2 | × | 1 | + | 69 2 | × | 69 2000 | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 345249 400 | + | 69 2 | + | 4761 4000 | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 3309729 4000 | + | 2 100 | V | ( | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 1 | ) |
| = | - | 3309729 4000 | + | 2 100 | V | ( | 1 | + | 69 2000 | ) | × | 1 2 | − | 2 100 | V | × | 1 |
| = | - | 3309729 4000 | + | 1 100 | V | ( | 1 | + | 69 2000 | ) | − | 1 50 | V |
| = | - | 3309729 4000 | + | 1 100 | V | × | 1 | + | 1 100 | V | × | 69 2000 | − | 1 50 | V |
| = | - | 3309729 4000 | + | 1 100 | V | + | 69 200000 | V | − | 1 50 | V |