| ( | x | + | 6 | ) | ÷ | 7 | − | ( | x | − | 5 | ) | ÷ | 6 | = | ( | x | + | 4 | ) | ÷ | 5 | − | ( | x | + | 3 | ) | ÷ | 4 |
| Left side of the equation = | x | × | 1 7 | + | 6 | × | 1 7 | − | ( | x | − | 5 | ) | × | 1 6 |
| = | x | × | 1 7 | + | 6 7 | − | ( | x | − | 5 | ) | × | 1 6 |
| = | 1 7 | x | + | 6 7 | − | x | × | 1 6 | + | 5 | × | 1 6 |
| = | 1 7 | x | + | 6 7 | − | x | × | 1 6 | + | 5 6 |
| = | - | 1 42 | x | + | 71 42 |
| - | 1 42 | x | + | 71 42 | = | ( | x | + | 4 | ) | ÷ | 5 | − | ( | x | + | 3 | ) | ÷ | 4 |
| Right side of the equation = | x | × | 1 5 | + | 4 | × | 1 5 | − | ( | x | + | 3 | ) | × | 1 4 |
| = | x | × | 1 5 | + | 4 5 | − | ( | x | + | 3 | ) | × | 1 4 |
| = | 1 5 | x | + | 4 5 | − | x | × | 1 4 | − | 3 | × | 1 4 |
| = | 1 5 | x | + | 4 5 | − | x | × | 1 4 | − | 3 4 |
| = | - | 1 20 | x | + | 1 20 |
| - | 1 42 | x | + | 71 42 | = | - | 1 20 | x | + | 1 20 |
| - | 1 42 | x | + | 1 20 | x | = | 1 20 | − | 71 42 |
11 420 | x | = | 1 20 | − | 71 42 |
11 420 | x | = | - | 689 420 |
| x | = | - | 689 420 | ÷ | 11 420 |
| = | - | 689 420 | × | 420 11 |
| = | - | 689 | × | 1 11 |
| x | = | - | 689 11 |
| x | = | - 62.636364 |