| 8 | x | ÷ | ( | 10 | ( | 85 | − | x | ) | ) | = | 1 | ÷ | 3 |
| Multiply both sides of the equation by: | ( | 10 | ( | 85 | − | x | ) | ) |
| 8 | x | = | 1 | ÷ | 3 | × | ( | 10 | ( | 85 | − | x | ) | ) |
| 8 | x | = | 1 | ÷ | 3 | × | 10 | ( | 85 | − | x | ) |
| 8 | x | = | 10 3 | ( | 85 | − | x | ) |
| 8 | x | = | 10 3 | × | 85 | − | 10 3 | x |
| 8 | x | = | 850 3 | − | 10 3 | x |
| 8 | x | + | 10 3 | x | = | 850 3 |
34 3 | x | = | 850 3 |
| x | = | 850 3 | ÷ | 34 3 |
| = | 850 3 | × | 3 34 |
| = | 25 | × | 1 |
| x | = | 25 |