39 5 | x | + | 800000 | = | 49 5 | ( | 80000 | ÷ | 54 5 | + | x | ) |
| 方程右边 = | 49 5 | × | 80000 | ÷ | 54 5 | + | 49 5 | x |
| = | 1960000 27 | + | 49 5 | x |
39 5 | x | + | 800000 | = | 1960000 27 | + | 49 5 | x |
39 5 | x | − | 49 5 | x | = | 1960000 27 | − | 800000 |
| - | 2 | x | = | 1960000 27 | − | 800000 |
| - | 2 | x | = | - | 19640000 27 |
19640000 27 | = | 2 | x |
| 2 | x | = | 19640000 27 |
| x | = | 19640000 27 | ÷ | 2 |
| = | 19640000 27 | × | 1 2 |
| = | 9820000 27 | × | 1 |
| x | = | 9820000 27 |
| x | = | 363703.703704 |