| x | + | 1 | ÷ | 15 | + | ( | x | + | 4 | ÷ | 12 | ) | = | 1 |
| Left side of the equation = | x | + | 1 15 | + | ( | x | + | 4 | ÷ | 12 | ) |
| x | + | 1 15 | + | ( | x | + | 4 | ÷ | 12 | ) | = | 1 |
| Left side of the equation = | x | + | 1 15 | + | x | + | 4 | ÷ | 12 |
| = | x | + | 1 15 | + | x | + | 1 3 |
| = | 2 | x | + | 2 5 |
| 2 | x | + | 2 5 | = | 1 |
| 2 | x | = | 1 | − | 2 5 |
| 2 | x | = | 3 5 |
| x | = | 3 5 | ÷ | 2 |
| = | 3 5 | × | 1 2 |
| x | = | 3 10 |
| x | = | 0.3 |