| ( | - | 2 | x | x | x | + | 2 | ÷ | 3 | × | x | x | − | x | + | 1 | ) | − | 2 | ÷ | 3 | × | ( | - | 2 | x | x | x | + | x | x | − | x | + | 3 2 | ) | = | - | 4 |
| Left side of the equation = | ( | - | 2 | x | x | x | + | 2 | ÷ | 3 | × | x | x | − | x | + | 1 | ) | − | 2 3 | ( | - | 2 | x | x | x | + | x | x | − | x | + | 3 2 | ) |
| ( | - | 2 | x | x | x | + | 2 | ÷ | 3 | × | x | x | − | x | + | 1 | ) | − | 2 3 | ( | - | 2 | x | x | x | + | x | x | − | x | + | 3 2 | ) | = | - | 4 |
| Left side of the equation = | - | 2 | x | x | x | + | 2 | ÷ | 3 | × | x | x | − | x | + | 1 | − | 2 3 | ( | - | 2 | x | x | x | + | x | x | − | x | + | 3 2 | ) |
| = | - | 2 | x | x | x | + | 2 3 | x | x | − | x | + | 1 | − | 2 3 | ( | - | 2 | x | x | x | + | x | x | − | x | + | 3 2 | ) |
| = | - | 2 | x | x | x | + | 2 3 | x | x | − | x | + | 1 | + | 2 3 | × | 2 | x |
| = | - | 2 | x | x | x | + | 2 3 | x | x | − | x | + | 1 | + | 4 3 | x | x |
| = | - | 2 | x | x | x | + | 2 3 | x | x | − | 1 3 | x | + | 0 | + | 4 3 | x |
| - | 2 | x | x | x | + | 2 3 | x | x | − | 1 3 | x | + | 0 | + | 4 3 | x | = | - | 4 |