N | × | 129 | × | 1 5 | + | 5000 | = | N | × | 129 | × | 1 2 | − | 5000 |
方程左边 = | N | × | 129 5 | + | 5000 |
129 5 | N | + | 5000 | = | N | × | 129 | × | 1 2 | − | 5000 |
方程右边 = | N | × | 129 2 | − | 5000 |
129 5 | N | + | 5000 | = | 129 2 | N | − | 5000 |
129 5 | N | − | 129 2 | N | = | - | 5000 | − | 5000 |
- | 387 10 | N | = | - | 5000 | − | 5000 |
- | 387 10 | N | = | - | 10000 |
10000 | = | 387 10 | N |
387 10 | N | = | 10000 |
N | = | 10000 | ÷ | 387 10 |
= | 10000 | × | 10 387 |
N | = | 100000 387 |
N | = | 258.397933 |