| ( | 1 | + | x | ) | ÷ | ( | 1 | + | x | + | 1 | + | 233 100 | ) | = | 3 10 |
| 方程两边同时乘以: | ( | 1 | + | x | + | 1 | + | 233 100 | ) |
| ( | 1 | + | x | ) | = | 3 10 | ( | 1 | + | x | + | 1 | + | 233 100 | ) |
| 1 | + | x | = | 3 10 | ( | 1 | + | x | + | 1 | + | 233 100 | ) |
| 1 | + | x | = | 3 10 | × | 1 | + | 3 10 | x | + | 3 10 | × | 1 | + | 3 10 | × | 233 100 |
| 1 | + | x | = | 3 10 | + | 3 10 | x | + | 3 10 | + | 699 1000 |
| 1 | + | x | = | 1299 1000 | + | 3 10 | x |
| x | − | 3 10 | x | = | 1299 1000 | − | 1 |
7 10 | x | = | 1299 1000 | − | 1 |
7 10 | x | = | 299 1000 |
| x | = | 299 1000 | ÷ | 7 10 |
| = | 299 1000 | × | 10 7 |
| = | 299 100 | × | 1 7 |
| x | = | 299 700 |
| x | = | 0.427143 |