| 750 | ÷ | x | + | 3 2 | = | 750 | ÷ | ( | x | + | 20 | ) |
| Multiply both sides of the equation by: | x | , | ( | x | + | 20 | ) |
| 750 | ( | x | + | 20 | ) | + | 3 2 | x | ( | x | + | 20 | ) | = | 750 | x |
| 750 | x | + | 750 | × | 20 | + | 3 2 | x | ( | x | + | 20 | ) | = | 750 | x |
| 750 | x | + | 15000 | + | 3 2 | x | ( | x | + | 20 | ) | = | 750 | x |
| 750 | x | + | 15000 | + | 3 2 | x | x | + | 3 2 | x | × | 20 | = | 750 | x |
| 750 | x | + | 15000 | + | 3 2 | x | x | + | 30 | x | = | 750 | x |
| 780 | x | + | 15000 | + | 3 2 | x | x | = | 750 | x |