| 4 | ÷ | ( | 5 | x | + | 1 | ) | = | 2 | ÷ | 3 |
| Multiply both sides of the equation by: | ( | 5 | x | + | 1 | ) |
| 4 | = | 2 | ÷ | 3 | × | ( | 5 | x | + | 1 | ) |
| 4 | = | 2 | ÷ | 3 | × | 5 | x | + | 2 | ÷ | 3 | × | 1 |
| 4 | = | 10 3 | x | + | 2 3 |
| - | 10 3 | x | = | 2 3 | − | 4 |
| - | 10 3 | x | = | - | 10 3 |
10 3 | = | 10 3 | x |
10 3 | x | = | 10 3 |
| x | = | 10 3 | ÷ | 10 3 |
| = | 10 3 | × | 3 10 |
| = | 1 | × | 1 |
| x | = | 1 |