251 50 | = | ( | 12 5 | u | ) | ÷ | ( | u | − | 12 5 | ) |
| 方程两边同时乘以: | ( | u | − | 12 5 | ) |
251 50 | ( | u | − | 12 5 | ) | = | ( | 12 5 | u | ) |
251 50 | u | − | 251 50 | × | 12 5 | = | ( | 12 5 | u | ) |
251 50 | u | − | 251 50 | × | 12 5 | = | 12 5 | u |
251 50 | u | − | 1506 125 | = | 12 5 | u |
251 50 | u | − | 12 5 | u | = | 1506 125 |
131 50 | u | = | 1506 125 |
| u | = | 1506 125 | ÷ | 131 50 |
| = | 1506 125 | × | 50 131 |
| = | 1506 5 | × | 2 131 |
| u | = | 3012 655 |
| u | = | 4.598473 |