| 6 | ( | 1 | + | x | ) | ÷ | 5 | + | x | = | 30 |
| Left side of the equation = | 6 5 | ( | 1 | + | x | ) | + | x |
6 5 | ( | 1 | + | x | ) | + | x | = | 30 |
| Left side of the equation = | 6 5 | × | 1 | + | 6 5 | x | + | x |
| = | 6 5 | + | 6 5 | x | + | x |
| = | 6 5 | + | 11 5 | x |
6 5 | + | 11 5 | x | = | 30 |
11 5 | x | = | 30 | − | 6 5 |
11 5 | x | = | 144 5 |
| x | = | 144 5 | ÷ | 11 5 |
| = | 144 5 | × | 5 11 |
| = | 144 | × | 1 11 |
| x | = | 144 11 |
| x | = | 13.090909 |