| 900 | ÷ | x | + | 2 | = | 900 | ÷ | ( | x | + | 5 | ) |
| Multiply both sides of the equation by: | x | , | ( | x | + | 5 | ) |
| 900 | ( | x | + | 5 | ) | + | 2 | x | ( | x | + | 5 | ) | = | 900 | x |
| 900 | x | + | 900 | × | 5 | + | 2 | x | ( | x | + | 5 | ) | = | 900 | x |
| 900 | x | + | 4500 | + | 2 | x | ( | x | + | 5 | ) | = | 900 | x |
| 900 | x | + | 4500 | + | 2 | x | x | + | 2 | x | × | 5 | = | 900 | x |
| 900 | x | + | 4500 | + | 2 | x | x | + | 10 | x | = | 900 | x |
| 910 | x | + | 4500 | + | 2 | x | x | = | 900 | x |