| 407240 | x | + | 785674 | ( | 1 | − | x | ) | = | 3017119 |
| 方程左边 = | 407240 | x | + | 785674 | × | 1 | − | 785674 | x |
| = | 407240 | x | + | 785674 | − | 785674 | x |
| = | - | 378434 | x | + | 785674 |
| - | 378434 | x | + | 785674 | = | 3017119 |
| - | 378434 | x | = | 3017119 | − | 785674 |
| - | 378434 | x | = | 2231445 |
| - | 2231445 | = | 378434 | x |
| 378434 | x | = | - | 2231445 |
| x | = | - | 2231445 | ÷ | 378434 |
| = | - | 2231445 | × | 1 378434 |
| x | = | - | 2231445 378434 |
| x | = | - 5.896524 |