| x | − | 32 | = | 5 |
| x | = | 5 | + | 32 |
| x | = | 37 |
39 5 | − | x | = | 27 10 |
| - | x | = | 27 10 | − | 39 5 |
| - | x | = | - | 51 10 |
51 10 | = | x |
| x | = | 51 10 |
| x | − | 19 5 | = | 43 10 |
| x | = | 43 10 | + | 19 5 |
| x | = | 81 10 |
| x | + | 39 5 | = | 8 |
| x | = | 8 | − | 39 5 |
| x | = | 1 5 |
19 2 | + | x | = | 68 5 |
| x | = | 68 5 | − | 19 2 |
| x | = | 41 10 |
21 2 | − | x | = | 5 |
| - | x | = | 5 | − | 21 2 |
| - | x | = | - | 11 2 |
11 2 | = | x |
| x | = | 11 2 |
| x | + | 9 5 | = | 19 10 |
| x | = | 19 10 | − | 9 5 |
| x | = | 1 10 |