| 17 | x | = | 34 5 |
| x | = | 34 5 | ÷ | 17 |
| = | 34 5 | × | 1 17 |
| = | 2 5 | × | 1 |
| x | = | 2 5 |
| x | = | 0.4 |
9 5 | ÷ | x | = | 6 |
| 方程两边同时乘以: | x |
9 5 | = | 6 | x |
| - | 6 | x | = | - | 9 5 |
9 5 | = | 6 | x |
| 6 | x | = | 9 5 |
| x | = | 9 5 | ÷ | 6 |
| = | 9 5 | × | 1 6 |
| = | 3 5 | × | 1 2 |
| x | = | 3 10 |
| x | = | 0.3 |
| x | + | 39 10 | = | 73 10 |
| x | = | 73 10 | − | 39 10 |
| x | = | 17 5 |
| x | − | 3 | = | 43 10 |
| x | = | 43 10 | + | 3 |
| x | = | 73 10 |
9 10 | x | = | 54 5 |
| x | = | 54 5 | ÷ | 9 10 |
| = | 54 5 | × | 10 9 |
| = | 6 | × | 2 |
| x | = | 12 |
| x | ÷ | 4 5 | = | 4 5 |
| x | = | 4 5 | ÷ | 5 4 |
| = | 4 5 | × | 4 5 |
| x | = | 16 25 |
| x | = | 0.64 |
13 5 | + | x | = | 33 5 |
| x | = | 33 5 | − | 13 5 |
| x | = | 4 |