| ( | - | 12 | ) | − | 6 | x | = | ( | 0 | − | 8 | x | + | 2 | − | 2 | x | ) | ÷ | 2 |
| Left side of the equation = | - | 12 | − | 6 | x |
| - | 12 | − | 6 | x | = | ( | 0 | − | 8 | x | + | 2 | − | 2 | x | ) | ÷ | 2 |
| Right side of the equation = | 0 | × | 1 2 | − | 8 | x | × | 1 2 | + | 2 | × | 1 2 | − | 2 | x | × | 1 2 |
| = | 0 | − | 4 | x | + | 1 | − | 1 | x |
| = | 1 | − | 5 | x |
| - | 12 | − | 6 | x | = | 1 | − | 5 | x |
| - | 6 | x | + | 5 | x | = | 1 | + | 12 |
| - | x | = | 1 | + | 12 |
| - | x | = | 1 | + | 12 |
| - | x | = | 13 |
| - | 13 | = | x |
| x | = | - | 13 |