| ( | x | − | ( | x | − | ( | x | − | 4 | ) | ÷ | 3 | ) | ÷ | 2 | ) | ÷ | 5 | = | x | ÷ | 4 |
| Left side of the equation = | x | × | 1 5 | − | ( | x | − | ( | x | − | 4 | ) | ÷ | 3 | ) | ÷ | 2 | × | 1 5 |
| = | x | × | 1 5 | − | ( | x | − | ( | x | − | 4 | ) | ÷ | 3 | ) | × | 1 10 |
| = | 1 5 | x | − | x | × | 1 10 | + | ( | x | − | 4 | ) | ÷ | 3 | × | 1 10 |
| = | 1 5 | x | − | x | × | 1 10 | + | ( | x | − | 4 | ) | × | 1 30 |
| = | 1 10 | x | + | ( | x | − | 4 | ) | × | 1 30 |
| = | 1 10 | x | + | x | × | 1 30 | − | 4 | × | 1 30 |
| = | 1 10 | x | + | x | × | 1 30 | − | 2 15 |
| = | 2 15 | x | − | 2 15 |
2 15 | x | − | 2 15 | = | x | ÷ | 4 |
2 15 | x | − | 1 4 | x | = | 2 15 |
| - | 7 60 | x | = | 2 15 |
| - | 2 15 | = | 7 60 | x |
7 60 | x | = | - | 2 15 |
| x | = | - | 2 15 | ÷ | 7 60 |
| = | - | 2 15 | × | 60 7 |
| = | - | 2 | × | 4 7 |
| x | = | - | 8 7 |
| x | = | - 1.142857 |