| 6 | × | 12 100 | ÷ | ( | 6 | + | x | ) | = | 10 100 |
| 方程两边同时乘以: | ( | 6 | + | x | ) |
| 6 | × | 12 100 | = | 10 100 | ( | 6 | + | x | ) |
| 6 | × | 12 100 | = | 10 100 | × | 6 | + | 10 100 | x |
18 25 | = | 3 5 | + | 10 100 | x |
| - | 10 100 | x | = | 3 5 | − | 18 25 |
| - | 10 100 | x | = | - | 3 25 |
3 25 | = | 10 100 | x |
10 100 | x | = | 3 25 |
| x | = | 3 25 | ÷ | 10 100 |
| = | 3 25 | × | 100 10 |
| = | 3 | × | 4 10 |
| x | = | 12 10 |
| x | = | 6 5 |
| x | = | 1.2 |