49 100 | ÷ | x | = | 7 |
| 方程两边同时乘以: | x |
49 100 | = | 7 | x |
| - | 7 | x | = | - | 49 100 |
49 100 | = | 7 | x |
| 7 | x | = | 49 100 |
| x | = | 49 100 | ÷ | 7 |
| = | 49 100 | × | 1 7 |
| = | 7 100 | × | 1 |
| x | = | 7 100 |
| x | = | 0.07 |
| x | ÷ | 3 5 | = | 4 5 |
| x | = | 4 5 | ÷ | 5 3 |
| = | 4 5 | × | 3 5 |
| x | = | 12 25 |
| x | = | 0.48 |
| x | ÷ | 97 10 | = | 1 |
| x | = | 1 | ÷ | 10 97 |
| = | 1 | × | 97 10 |
| x | = | 97 10 |
| x | = | 9.7 |
| x | ÷ | 39 10 | = | 10 |
| x | = | 10 | ÷ | 10 39 |
| = | 10 | × | 39 10 |
| = | 1 | × | 39 |
| x | = | 39 |
| 10 | ÷ | x | = | 100 |
| 方程两边同时乘以: | x |
| 10 | = | 100 | x |
| - | 100 | x | = | - | 10 |
| 10 | = | 100 | x |
| 100 | x | = | 10 |
| x | = | 10 | ÷ | 100 |
| = | 10 | × | 1 100 |
| = | 1 | × | 1 10 |
| x | = | 1 10 |
| x | = | 0.1 |
| x | ÷ | 1 10 | = | 15 |
| x | = | 15 | ÷ | 10 |
| = | 15 | × | 1 10 |
| = | 3 | × | 1 2 |
| x | = | 3 2 |
| x | = | 1.5 |
| x | ÷ | 6 | = | 1 2 |
| x | = | 1 2 | ÷ | 1 6 |
| = | 1 2 | × | 6 |
| = | 1 | × | 3 |
| x | = | 3 |