97 100 | × | 7 | ( | x | − | 2 | ) | = | 6 | x |
| 方程左边 = | 679 100 | ( | x | − | 2 | ) |
679 100 | ( | x | − | 2 | ) | = | 6 | x |
| 方程左边 = | 679 100 | x | − | 679 100 | × | 2 |
| = | 679 100 | x | − | 679 50 |
679 100 | x | − | 679 50 | = | 6 | x |
679 100 | x | − | 6 | x | = | 679 50 |
79 100 | x | = | 679 50 |
| x | = | 679 50 | ÷ | 79 100 |
| = | 679 50 | × | 100 79 |
| = | 679 | × | 2 79 |
| x | = | 1358 79 |
| x | = | 17.189873 |