| 7 | ÷ | ( | 1 | − | 577121 1000000 | x | ) | = | 2 |
| 方程两边同时乘以: | ( | 1 | − | 577121 1000000 | x | ) |
| 7 | = | 2 | ( | 1 | − | 577121 1000000 | x | ) |
| 7 | = | 2 | × | 1 | − | 2 | × | 577121 1000000 | x |
| 7 | = | 2 | − | 577121 500000 | x |
577121 500000 | x | = | 2 | − | 7 |
577121 500000 | x | = | - | 5 |
| x | = | - | 5 | ÷ | 577121 500000 |
| = | - | 5 | × | 500000 577121 |
| x | = | - | 2500000 577121 |
| x | = | - 4.331847 |