| ( | 1 | ÷ | 3 | ) | ÷ | ( | 4 | ÷ | 5 | ) | = | x | ÷ | 12 |
| Multiply both sides of the equation by: | ( | 4 | ÷ | 5 | ) |
| ( | 1 | ÷ | 3 | ) | = | x | ÷ | 12 | × | ( | 4 | ÷ | 5 | ) |
| 1 | ÷ | 3 | = | x | ÷ | 12 | × | ( | 4 | ÷ | 5 | ) |
| 1 | ÷ | 3 | = | x | ÷ | 12 | × | 4 | ÷ | 5 |
1 3 | = | x | × | 1 15 |
| - | 1 15 | x | = | - | 1 3 |
1 3 | = | 1 15 | x |
1 15 | x | = | 1 3 |
| x | = | 1 3 | ÷ | 1 15 |
| = | 1 3 | × | 15 |
| = | 1 | × | 5 |
| x | = | 5 |