5 100 | = | 75 200 | x | + | ( | 1 | − | x | ) | ( | - | 20 100 | ) |
| 方程右边 = | 75 200 | x | + | 1 | ( | - | 20 100 | ) | − | x | ( | - | 20 100 | ) |
| = | 75 200 | x | − | 1 | × | 20 100 | − | x | ( | - | 20 100 | ) |
| = | 75 200 | x | − | 1 5 | − | x | ( | - | 20 100 | ) |
| = | 75 200 | x | − | 1 5 | + | x | × | 20 100 |
| = | 23 40 | x | − | 1 5 |
5 100 | = | 23 40 | x | − | 1 5 |
| - | 23 40 | x | = | - | 1 5 | − | 5 100 |
| - | 23 40 | x | = | - | 1 4 |
1 4 | = | 23 40 | x |
23 40 | x | = | 1 4 |
| x | = | 1 4 | ÷ | 23 40 |
| = | 1 4 | × | 40 23 |
| = | 1 | × | 10 23 |
| x | = | 10 23 |
| x | = | 0.434783 |