7 25 | x | × | 2 | + | 72 | x | − | 120349 50 | = | 0 |
| 方程左边 = | 14 25 | x | + | 72 | x | − | 120349 50 |
| = | 1814 25 | x | − | 120349 50 |
1814 25 | x | − | 120349 50 | = | 0 |
1814 25 | x | = | 0 | + | 120349 50 |
1814 25 | x | = | 120349 50 |
| x | = | 120349 50 | ÷ | 1814 25 |
| = | 120349 50 | × | 25 1814 |
| = | 120349 2 | × | 1 1814 |
| x | = | 120349 3628 |
| x | = | 33.172271 |