| 2 | ÷ | a | × | ( | - | 111 | ) | + | 2 | ÷ | a | × | ( | 11 | − | 1 | ) | = | 0 |
| Multiply both sides of the equation by: | a |
| 2 | ( | - | 111 | ) | + | 2 | ÷ | 1 | × | ( | 11 | − | 1 | ) | × | 1 | = | 0 |
| - | 2 | × | 111 | + | 2 | ÷ | 1 | × | ( | 11 | − | 1 | ) | × | 1 | = | 0 |
| - | 222 | + | 2 | ( | 11 | − | 1 | ) | = | 0 |
| - | 222 | + | 2 | × | 11 | − | 2 | × | 1 | = | 0 |
| - | 222 | + | 22 | − | 2 | = | 0 |
| - | 202 | = | 0 |
| = | 0 | + | 202 |