| x | ÷ | ( | 659 100 | + | x | ) | = | 3 10 |
| 方程两边同时乘以: | ( | 659 100 | + | x | ) |
| x | = | 3 10 | ( | 659 100 | + | x | ) |
| x | = | 3 10 | × | 659 100 | + | 3 10 | x |
| x | = | 1977 1000 | + | 3 10 | x |
| x | − | 3 10 | x | = | 1977 1000 |
7 10 | x | = | 1977 1000 |
| x | = | 1977 1000 | ÷ | 7 10 |
| = | 1977 1000 | × | 10 7 |
| = | 1977 100 | × | 1 7 |
| x | = | 1977 700 |
| x | = | 2.824286 |