| 9 | ( | 88 | x | ÷ | ( | x | + | 88 | ) | ) | = | 66 |
| 9 | × | 88 | x | ÷ | ( | x | + | 88 | ) | = | 66 |
| 792 | x | ÷ | ( | x | + | 88 | ) | = | 66 |
| Multiply both sides of the equation by: | ( | x | + | 88 | ) |
| 792 | x | = | 66 | ( | x | + | 88 | ) |
| 792 | x | = | 66 | x | + | 66 | × | 88 |
| 792 | x | = | 66 | x | + | 5808 |
| 792 | x | − | 66 | x | = | 5808 |
| 726 | x | = | 5808 |
| x | = | 5808 | ÷ | 726 |
| = | 5808 | × | 1 726 |
| = | 8 | × | 1 |
| x | = | 8 |