| ( | 8 100 | × | 100 | ÷ | 55 | × | x | ) | ÷ | ( | 1 | − | 8 100 | × | 100 | ÷ | 55 | × | x | ) | = | 10 100 |
| 方程两边同时乘以: | ( | 1 | − | 8 100 | × | 100 | ÷ | 55 | × | x | ) |
| ( | 8 100 | × | 100 | ÷ | 55 | × | x | ) | = | 10 100 | ( | 1 | − | 8 100 | × | 100 | ÷ | 55 | × | x | ) |
8 100 | × | 100 | ÷ | 55 | × | x | = | 10 100 | ( | 1 | − | 8 100 | × | 100 | ÷ | 55 | × | x | ) |
8 100 | × | 100 | ÷ | 55 | × | x | = | 10 100 | × | 1 | − | 10 100 | × | 8 100 | × | 100 | ÷ | 55 | × | x |
8 55 | x | = | 1 10 | − | 4 275 | x |
8 55 | x | + | 4 275 | x | = | 1 10 |
4 25 | x | = | 1 10 |
| x | = | 1 10 | ÷ | 4 25 |
| = | 1 10 | × | 25 4 |
| = | 1 2 | × | 5 4 |
| x | = | 5 8 |
| x | = | 0.625 |