| x | = | 400 | × | 1 10 | ÷ | ( | ( | 82 | − | 41 5 | ) | × | 10 | − | 6 | × | 4000 | × | 24 | ) |
| 方程两边同时乘以: | ( | ( | 82 | − | 41 5 | ) | × | 10 | − | 6 | × | 4000 | × | 24 | ) |
| x | ( | ( | 82 | − | 41 5 | ) | × | 10 | − | 6 | × | 4000 | × | 24 | ) | = | 400 | × | 1 10 |
| x | ( | 82 | − | 41 5 | ) | × | 10 | − | x | × | 6 | × | 4000 | × | 24 | = | 400 | × | 1 10 |
| x | ( | 82 | − | 41 5 | ) | × | 10 | − | x | × | 576000 | = | 40 |
| x | × | 82 | × | 10 | − | x | × | 41 5 | × | 10 | − | 576000 | x | = | 40 |
| x | × | 820 | − | x | × | 82 | − | 576000 | x | = | 40 |
| - | 575262 | x | = | 40 |
| - | 40 | = | 575262 | x |
| 575262 | x | = | - | 40 |
| x | = | - | 40 | ÷ | 575262 |
| = | - | 40 | × | 1 575262 |
| = | - | 20 | × | 1 287631 |
| x | = | - | 20 287631 |
| x | = | - 0.00007 |