| 8 | ( | 4 | x | − | 1 | ) | ÷ | ( | 2 | x | + | 1 | ) | = | 4 |
| Multiply both sides of the equation by: | ( | 2 | x | + | 1 | ) |
| 8 | ( | 4 | x | − | 1 | ) | = | 4 | ( | 2 | x | + | 1 | ) |
| 8 | × | 4 | x | − | 8 | × | 1 | = | 4 | ( | 2 | x | + | 1 | ) |
| 8 | × | 4 | x | − | 8 | × | 1 | = | 4 | × | 2 | x | + | 4 | × | 1 |
| 32 | x | − | 8 | = | 8 | x | + | 4 |
| 32 | x | − | 8 | x | = | 4 | + | 8 |
| 24 | x | = | 4 | + | 8 |
| 24 | x | = | 12 |
| x | = | 12 | ÷ | 24 |
| = | 12 | × | 1 24 |
| = | 1 | × | 1 2 |
| x | = | 1 2 |
| x | = | 0.5 |