| 7 | ÷ | 10 | × | x | − | 3 | ÷ | ( | 17 | − | 20 | x | ) | = | 1 |
| Multiply both sides of the equation by: | ( | 17 | − | 20 | x | ) |
| 7 | ÷ | 10 | × | x | ( | 17 | − | 20 | x | ) | − | 3 | = | 1 | ( | 17 | − | 20 | x | ) |
| 7 | ÷ | 10 | × | x | × | 17 | − | 7 | ÷ | 10 | × | x | × | 20 | x | − | 3 | = | 1 | ( | 17 | − | 20 | x | ) |
| 7 | ÷ | 10 | × | x | × | 17 | − | 7 | ÷ | 10 | × | x | × | 20 | x | − | 3 | = | 1 | × | 17 | − | 1 | × | 20 | x |
119 10 | x | − | 14 | x | x | − | 3 | = | 17 | − | 20 | x |