| 50 | = | 1 | ( | 1 | + | 15 100 | ( | 1 | − | x | ) | ) | ÷ | ( | 15 100 | − | 15 100 | ( | 1 | − | x | ) | ) |
| 方程两边同时乘以: | ( | 15 100 | − | 15 100 | ( | 1 | − | x | ) | ) |
| 50 | ( | 15 100 | − | 15 100 | ( | 1 | − | x | ) | ) | = | 1 | ( | 1 | + | 15 100 | ( | 1 | − | x | ) | ) |
| 50 | × | 15 100 | − | 50 | × | 15 100 | ( | 1 | − | x | ) | = | 1 | ( | 1 | + | 15 100 | ( | 1 | − | x | ) | ) |
| 50 | × | 15 100 | − | 50 | × | 15 100 | ( | 1 | − | x | ) | = | 1 | × | 1 | + | 1 | × | 15 100 | ( | 1 | − | x | ) |
15 2 | − | 15 2 | ( | 1 | − | x | ) | = | 1 | + | 3 20 | ( | 1 | − | x | ) |
15 2 | − | 15 2 | × | 1 | + | 15 2 | x | = | 1 | + | 3 20 | ( | 1 | − | x | ) |
15 2 | − | 15 2 | × | 1 | + | 15 2 | x | = | 1 | + | 3 20 | × | 1 | − | 3 20 | x |
15 2 | − | 15 2 | + | 15 2 | x | = | 1 | + | 3 20 | − | 3 20 | x |
| 0 | + | 15 2 | x | = | 23 20 | − | 3 20 | x |
15 2 | x | + | 3 20 | x | = | 23 20 |
153 20 | x | = | 23 20 |
| x | = | 23 20 | ÷ | 153 20 |
| = | 23 20 | × | 20 153 |
| = | 23 | × | 1 153 |
| x | = | 23 153 |
| x | = | 0.150327 |