| 1 | ÷ | 20 | × | ( | 16 | − | x | ) | + | 43 | ÷ | 432 | × | x | = | 1 |
| 方程左边 = | 1 20 | ( | 16 | − | x | ) | + | 43 432 | x |
1 20 | ( | 16 | − | x | ) | + | 43 432 | x | = | 1 |
| 方程左边 = | 1 20 | × | 16 | − | 1 20 | x | + | 43 432 | x |
| = | 4 5 | − | 1 20 | x | + | 43 432 | x |
| = | 4 5 | + | 107 2160 | x |
4 5 | + | 107 2160 | x | = | 1 |
107 2160 | x | = | 1 | − | 4 5 |
107 2160 | x | = | 1 5 |
| x | = | 1 5 | ÷ | 107 2160 |
| = | 1 5 | × | 2160 107 |
| = | 1 | × | 432 107 |
| x | = | 432 107 |
| x | = | 4.037383 |