| ( | 3 | − | x | ) | ÷ | x | = | x | ÷ | ( | 4 | − | x | ) |
| Multiply both sides of the equation by: | x | , | ( | 4 | − | x | ) |
| ( | 3 | − | x | ) | ( | 4 | − | x | ) | = | x | x |
| 3 | ( | 4 | − | x | ) | − | x | ( | 4 | − | x | ) | = | x | x |
| 3 | × | 4 | − | 3 | x | − | x | ( | 4 | − | x | ) | = | x | x |
| 12 | − | 3 | x | − | x | ( | 4 | − | x | ) | = | x | x |
| 12 | − | 3 | x | − | x | × | 4 | + | x | x | = | x | x |
| 12 | − | 7 | x | + | x | x | = | x | x |
| x1= | 12 7 |