| x | ( | 10438 25 | − | 2099 25 | ) | = | ( | 4 | − | x | ) | ( | 61237 25 | − | 10438 25 | ) |
| 方程左边 = | x | × | 10438 25 | − | x | × | 2099 25 |
| = | 8339 25 | x |
8339 25 | x | = | ( | 4 | − | x | ) | ( | 61237 25 | − | 10438 25 | ) |
| 方程右边 = | 4 | ( | 61237 25 | − | 10438 25 | ) | − | x | ( | 61237 25 | − | 10438 25 | ) |
| = | 4 | × | 61237 25 | − | 4 | × | 10438 25 | − | x | ( | 61237 25 | − | 10438 25 | ) |
| = | 244948 25 | − | 41752 25 | − | x | ( | 61237 25 | − | 10438 25 | ) |
| = | 203196 25 | − | x | ( | 61237 25 | − | 10438 25 | ) |
| = | 203196 25 | − | x | × | 61237 25 | + | x | × | 10438 25 |
| = | 203196 25 | − | 50799 25 | x |
8339 25 | x | = | 203196 25 | − | 50799 25 | x |
8339 25 | x | + | 50799 25 | x | = | 203196 25 |
59138 25 | x | = | 203196 25 |
| x | = | 203196 25 | ÷ | 59138 25 |
| = | 203196 25 | × | 25 59138 |
| = | 101598 | × | 1 29569 |
| x | = | 101598 29569 |
| x | = | 3.435963 |