| x | ÷ | ( | 85 | − | x | ) | = | 34 | ÷ | 3 |
| Multiply both sides of the equation by: | ( | 85 | − | x | ) |
| x | = | 34 | ÷ | 3 | × | ( | 85 | − | x | ) |
| x | = | 34 | ÷ | 3 | × | 85 | − | 34 | ÷ | 3 | × | x |
| x | = | 2890 3 | − | 34 3 | x |
| x | + | 34 3 | x | = | 2890 3 |
37 3 | x | = | 2890 3 |
| x | = | 2890 3 | ÷ | 37 3 |
| = | 2890 3 | × | 3 37 |
| = | 2890 | × | 1 37 |
| x | = | 2890 37 |
| x | = | 78.108108 |