7 20 | = | 1 | ÷ | 2 | × | ( | x | ÷ | 9662 25 | ) | − | 1 |
| 方程右边 = | 1 2 | ( | x | ÷ | 9662 25 | ) | − | 1 |
7 20 | = | 1 2 | ( | x | ÷ | 9662 25 | ) | − | 1 |
| 方程右边 = | 1 2 | x | ÷ | 9662 25 | − | 1 |
| = | 25 19324 | x | − | 1 |
7 20 | = | 25 19324 | x | − | 1 |
| - | 25 19324 | x | = | - | 1 | − | 7 20 |
| - | 25 19324 | x | = | - | 27 20 |
27 20 | = | 25 19324 | x |
25 19324 | x | = | 27 20 |
| x | = | 27 20 | ÷ | 25 19324 |
| = | 27 20 | × | 19324 25 |
| = | 27 5 | × | 4831 25 |
| x | = | 130437 125 |
| x | = | 1043.496 |