611 100 | = | ( | 5 2 | u | ) | ÷ | ( | u | − | 5 2 | ) |
| 方程两边同时乘以: | ( | u | − | 5 2 | ) |
611 100 | ( | u | − | 5 2 | ) | = | ( | 5 2 | u | ) |
611 100 | u | − | 611 100 | × | 5 2 | = | ( | 5 2 | u | ) |
611 100 | u | − | 611 100 | × | 5 2 | = | 5 2 | u |
611 100 | u | − | 611 40 | = | 5 2 | u |
611 100 | u | − | 5 2 | u | = | 611 40 |
361 100 | u | = | 611 40 |
| u | = | 611 40 | ÷ | 361 100 |
| = | 611 40 | × | 100 361 |
| = | 611 2 | × | 5 361 |
| u | = | 3055 722 |
| u | = | 4.231302 |