2171 5000 | = | 137 1000 | Z | − | 3 | + | 119 1000 | Z | − | 2 | + | 269 1000 | Z | − | 1 | − | 19 1000 |
| 方程右边 = | 21 40 | Z | − | 6019 1000 |
2171 5000 | = | 21 40 | Z | − | 6019 1000 |
| - | 21 40 | Z | = | - | 6019 1000 | − | 2171 5000 |
| - | 21 40 | Z | = | - | 16133 2500 |
16133 2500 | = | 21 40 | Z |
21 40 | Z | = | 16133 2500 |
| Z | = | 16133 2500 | ÷ | 21 40 |
| = | 16133 2500 | × | 40 21 |
| = | 16133 125 | × | 2 21 |
| Z | = | 32266 2625 |
| Z | = | 12.29181 |