| ( | 65 | × | 9 10 | − | x | ) | × | 77 100 | − | x | = | 65 | × | 3 5 |
| 方程左边 = | 65 | × | 9 10 | × | 77 100 | − | x | × | 77 100 | − | x |
| = | 9009 200 | − | x | × | 77 100 | − | x |
| = | 9009 200 | − | 177 100 | x |
9009 200 | − | 177 100 | x | = | 65 | × | 3 5 |
| 方程右边 = | 39 |
9009 200 | − | 177 100 | x | = | 39 |
| - | 177 100 | x | = | 39 | − | 9009 200 |
| - | 177 100 | x | = | - | 1209 200 |
1209 200 | = | 177 100 | x |
177 100 | x | = | 1209 200 |
| x | = | 1209 200 | ÷ | 177 100 |
| = | 1209 200 | × | 100 177 |
| = | 403 2 | × | 1 59 |
| x | = | 403 118 |
| x | = | 3.415254 |