| 2 | ÷ | ( | x | + | 10 | ) | = | 6 5 | ÷ | ( | x | − | 10 | ) |
| Multiply both sides of the equation by: | ( | x | + | 10 | ) | , | ( | x | − | 10 | ) |
| 2 | ( | x | − | 10 | ) | = | 6 5 | ( | x | + | 10 | ) |
| 2 | x | − | 2 | × | 10 | = | 6 5 | ( | x | + | 10 | ) |
| 2 | x | − | 2 | × | 10 | = | 6 5 | x | + | 6 5 | × | 10 |
| 2 | x | − | 20 | = | 6 5 | x | + | 12 |
| 2 | x | − | 6 5 | x | = | 12 | + | 20 |
4 5 | x | = | 12 | + | 20 |
4 5 | x | = | 32 |
| x | = | 32 | ÷ | 4 5 |
| = | 32 | × | 5 4 |
| = | 8 | × | 5 |
| x | = | 40 |