| ( | v | − | 98 5 | ) | ( | - | 144 5 | ) | = | 98 5 | v |
| 方程左边 = | v | ( | - | 144 5 | ) | − | 98 5 | ( | - | 144 5 | ) |
| = | - | v | × | 144 5 | − | 98 5 | ( | - | 144 5 | ) |
| = | - | 144 5 | v | + | 98 5 | × | 144 5 |
| = | - | 144 5 | v | + | 14112 25 |
| - | 144 5 | v | + | 14112 25 | = | 98 5 | v |
| - | 144 5 | v | − | 98 5 | v | = | - | 14112 25 |
| - | 242 5 | v | = | - | 14112 25 |
14112 25 | = | 242 5 | v |
242 5 | v | = | 14112 25 |
| v | = | 14112 25 | ÷ | 242 5 |
| = | 14112 25 | × | 5 242 |
| = | 7056 5 | × | 1 121 |
| v | = | 7056 605 |
| v | = | 11.66281 |