| q | ÷ | ( | q | − | 1 | ) | × | 3 10 | − | 2 5 | ÷ | ( | q | − | 1 | ) | = | 563 1000 |
| 方程两边同时乘以: | ( | q | − | 1 | ) |
| q | × | 3 10 | − | 2 5 | = | 563 1000 | ( | q | − | 1 | ) |
| q | × | 3 10 | − | 2 5 | = | 563 1000 | q | − | 563 1000 | × | 1 |
| q | × | 3 10 | − | 2 5 | = | 563 1000 | q | − | 563 1000 |
3 10 | q | − | 563 1000 | q | = | - | 563 1000 | + | 2 5 |
| - | 263 1000 | q | = | - | 563 1000 | + | 2 5 |
| - | 263 1000 | q | = | - | 163 1000 |
163 1000 | = | 263 1000 | q |
263 1000 | q | = | 163 1000 |
| q | = | 163 1000 | ÷ | 263 1000 |
| = | 163 1000 | × | 1000 263 |
| = | 163 | × | 1 263 |
| q | = | 163 263 |
| q | = | 0.619772 |